Category: ethers-buliding-blocks

Mannathan, Subramaniyan et al. published their research in Chemical Communications (Cambridge, United Kingdom) in 2013 | CAS: 16356-02-8

1,4-Dimethoxy-2-butyne (cas: 16356-02-8) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. Ethyl ether is an excellent solvent for extractions and for a wide variety of chemical reactions. It is also used as a volatile starting fluid for diesel engines and gasoline engines in cold weather. Dimethyl ether is used as a spray propellant and refrigerant. Methyl t-butyl ether (MTBE) is a gasoline additive that boosts the octane number and reduces the amount of nitrogen-oxide pollutants in the exhaust. The ethers of ethylene glycol are used as solvents and plasticizers.Reference of 16356-02-8

Nickel-catalyzed regio- and diastereoselective intermolecular three-component coupling of oxabicyclic alkenes with alkynes and organoboronic acids was written by Mannathan, Subramaniyan;Cheng, Chien-Hong. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2013.Reference of 16356-02-8 This article mentions the following:

Reaction of oxabicyclic alkenes with alkynes and organoboronic acids in the presence of Ni(cod)2, P(t-Bu)3, and CsF in a binary solvent toluene-methanol (1:3) at 75 to 85 °C provided exo-5,6-disubstituted 7-oxanorbornene derivatives in good to excellent yields. E.g., in presence of Ni(cod)2, P(t-Bu)3, and CsF, three-component coupling of oxabicyclic alkene (I) with PhCCMe and (E)-PhCH:CHB(OH)2 gave 92% II. In the experiment, the researchers used many compounds, for example, 1,4-Dimethoxy-2-butyne (cas: 16356-02-8Reference of 16356-02-8).

1,4-Dimethoxy-2-butyne (cas: 16356-02-8) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. Ethyl ether is an excellent solvent for extractions and for a wide variety of chemical reactions. It is also used as a volatile starting fluid for diesel engines and gasoline engines in cold weather. Dimethyl ether is used as a spray propellant and refrigerant. Methyl t-butyl ether (MTBE) is a gasoline additive that boosts the octane number and reduces the amount of nitrogen-oxide pollutants in the exhaust. The ethers of ethylene glycol are used as solvents and plasticizers.Reference of 16356-02-8

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Chen, Xin-bing et al. published their research in Yejing Yu Xianshi in 2004 | CAS: 39969-26-1

1-Methoxy-4-((4-propylphenyl)ethynyl)benzene (cas: 39969-26-1) belongs to ethers. Ethers are good solvents partly because they are not very reactive. Most ethers can be cleaved, however, by hydrobromic acid (HBr) to give alkyl bromides or by hydroiodic acid (HI) to give alkyl iodides. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly autoxidize to form hydroperoxides and dialkyl peroxides. If concentrated or heated, these peroxides may explode. To prevent such explosions, ethers should be obtained in small quantities, kept in tightly sealed containers, and used promptly.Electric Literature of C18H18O

Effects of cyclohexyl group on electro-optical properties of liquid crystal tolan was written by Chen, Xin-bing;Feng, Kai;Jia, Lin;An, Zhong-wei. And the article was included in Yejing Yu Xianshi in 2004.Electric Literature of C18H18O This article mentions the following:

As one of widely used liquid crystals, tolans are mainly used for improving birefringence of liquid crystal composition Effects of cyclohexyl group introduced into mol. on the electro-optical properties of tolan were investigated. The results show that the threshold voltage and birefringence of the composition can be increased by introducing cyclohexyl group into mol. In the experiment, the researchers used many compounds, for example, 1-Methoxy-4-((4-propylphenyl)ethynyl)benzene (cas: 39969-26-1Electric Literature of C18H18O).

1-Methoxy-4-((4-propylphenyl)ethynyl)benzene (cas: 39969-26-1) belongs to ethers. Ethers are good solvents partly because they are not very reactive. Most ethers can be cleaved, however, by hydrobromic acid (HBr) to give alkyl bromides or by hydroiodic acid (HI) to give alkyl iodides. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly autoxidize to form hydroperoxides and dialkyl peroxides. If concentrated or heated, these peroxides may explode. To prevent such explosions, ethers should be obtained in small quantities, kept in tightly sealed containers, and used promptly.Electric Literature of C18H18O

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Shi, Yinyin et al. published their research in ACS Omega in 2022 | CAS: 105-13-5

(4-Methoxyphenyl)methanol (cas: 105-13-5) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly autoxidize to form hydroperoxides and dialkyl peroxides. If concentrated or heated, these peroxides may explode. To prevent such explosions, ethers should be obtained in small quantities, kept in tightly sealed containers, and used promptly.Category: ethers-buliding-blocks

tBuOLi-Promoted Hydroboration of Esters and Epoxides was written by Shi, Yinyin;Wang, Yue;Huang, Zhefan;Zhang, Fangjun;Shao, Yinlin. And the article was included in ACS Omega in 2022.Category: ethers-buliding-blocks This article mentions the following:

Com. available and inexpensive lithium tert-butoxide (tBuOLi) acts as a good precatalyst for the hydroboration of esters, lactones, and epoxides using pinacolborane as a borylation agent. Functional groups such as cyano-, nitro-, amino-, vinyl, and alkynyl are unaffected under the presented hydroboration process, representing high chemoselectivity. This transformation has also been effectively applied to the synthesis of key intermediates of Erlotinib and Cinacalcet. Preliminary investigations of the mechanism show that the hydroboration proceeds through the in situ formed BH3 species. In the experiment, the researchers used many compounds, for example, (4-Methoxyphenyl)methanol (cas: 105-13-5Category: ethers-buliding-blocks).

(4-Methoxyphenyl)methanol (cas: 105-13-5) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly autoxidize to form hydroperoxides and dialkyl peroxides. If concentrated or heated, these peroxides may explode. To prevent such explosions, ethers should be obtained in small quantities, kept in tightly sealed containers, and used promptly.Category: ethers-buliding-blocks

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Ritz, Florian J. et al. published their research in European Journal of Organic Chemistry in 2021 | CAS: 16356-02-8

1,4-Dimethoxy-2-butyne (cas: 16356-02-8) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil. The unique properties of ethers (i.e., that they are strongly polar, with nonbonding electron pairs but no hydroxyl group) enhance the formation and use of many reagents. For example, Grignard reagents cannot form unless an ether is present to share its lone pair of electrons with the magnesium atom. Complexation of the magnesium atom stabilizes the Grignard reagent and helps to keep it in solution.Reference of 16356-02-8

Syntheses, Structural Characterization, and Kinetic Investigations of Metalla[3]triangulanes: Isoelectronic Nickel(0) and Copper(I) Complexes with Bicyclopropylidene (bcp) and Dicyclopropylacetylene (dcpa) as Ligands was written by Ritz, Florian J.;Valentin, Lars;Henss, Anja;Wuertele, Christian;Walter, Olaf;Kozhushkov, Sergei I.;de Meijere, Armin;Schindler, Siegfried. And the article was included in European Journal of Organic Chemistry in 2021.Reference of 16356-02-8 This article mentions the following:

The kinetics of the reactions between [Ni(bipy)(COD)] and bicyclopropylidene (bcp), dicyclopropylacetylene (dcpa) and 1,4-dimethoxy-2-butyne (dmbu) were investigated using stopped-flow techniques. Similar to previous studies the results support an associative mechanism (activation parameters for bcp: ΔH# = 46±2 kJ·mol-1 and ΔS# = -69±8 J· mol-1·K-1) and therefore allowed to postulate a more general reaction mechanism for the reaction pathway. The products, the nickel(0) complexes [Ni(bipy)(bcp)] and [Ni(bipy)(dcpa)], could be structurally characterized and the mol. structures are presented. In addition, the corresponding copper(I) complexes [Cu(bipy)(bcp)]PF6 and [Cu(bipy)(dcpa)]PF6 were also structurally characterized and their reactivity towards dioxygen was investigated. A detailed discussion of the structural properties and comparisons to similar literature-known olefinic complexes with transition metals are presented. In the experiment, the researchers used many compounds, for example, 1,4-Dimethoxy-2-butyne (cas: 16356-02-8Reference of 16356-02-8).

1,4-Dimethoxy-2-butyne (cas: 16356-02-8) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil. The unique properties of ethers (i.e., that they are strongly polar, with nonbonding electron pairs but no hydroxyl group) enhance the formation and use of many reagents. For example, Grignard reagents cannot form unless an ether is present to share its lone pair of electrons with the magnesium atom. Complexation of the magnesium atom stabilizes the Grignard reagent and helps to keep it in solution.Reference of 16356-02-8

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Kabir, M. Shahjahan et al. published their research in Tetrahedron Letters in 2007 | CAS: 57179-35-8

3-Hydroxy-5-methoxybenzaldehyde (cas: 57179-35-8) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. But on the other hand, ethers undergo cleavage by reaction with acids. At room temperature, ethers are pleasant-smelling colourless liquids. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil.Recommanded Product: 57179-35-8

An efficient palladium-catalyzed Negishi cross-coupling reaction with arylvinyl iodides: facile regioselective synthesis of E-stilbenes and their analogues was written by Kabir, M. Shahjahan;Monte, Aaron;Cook, James M.. And the article was included in Tetrahedron Letters in 2007.Recommanded Product: 57179-35-8 This article mentions the following:

A general synthetic route for the Pd-catalyzed cross-coupling of an arylzinc reagent with arylvinyl iodides (Negishi cross-coupling) has been developed. The system permits efficient and selective preparation of E-stilbenes and their analogs. It also functions effectively at low levels of catalyst loading without the need for an addnl. ligand and tolerates a wide range of functional groups including heteroaromatic substrates. A systematic study of various parameters was performed and correlated with catalyst-substrate activity. In the experiment, the researchers used many compounds, for example, 3-Hydroxy-5-methoxybenzaldehyde (cas: 57179-35-8Recommanded Product: 57179-35-8).

3-Hydroxy-5-methoxybenzaldehyde (cas: 57179-35-8) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. But on the other hand, ethers undergo cleavage by reaction with acids. At room temperature, ethers are pleasant-smelling colourless liquids. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil.Recommanded Product: 57179-35-8

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Ozcan, Elif et al. published their research in ChemistrySelect in 2021 | CAS: 111-77-3

2-(2-Methoxyethoxy)ethanol (cas: 111-77-3) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly autoxidize to form hydroperoxides and dialkyl peroxides. If concentrated or heated, these peroxides may explode. To prevent such explosions, ethers should be obtained in small quantities, kept in tightly sealed containers, and used promptly.Synthetic Route of C5H12O3

Effect of the Hydrophilic/Hydrophobic Pendants on Physicochemical Properties: Applications Based on Cyclotriphosphazene Core was written by Ozcan, Elif;Uslu, Aylin. And the article was included in ChemistrySelect in 2021.Synthetic Route of C5H12O3 This article mentions the following:

This study focused on investigating the effect of hydrophilic and hydrophobic substituents on the physicochem. properties for medical applications. In this study, to understand the effect of hydrophilic and hydrophobic substituents on physicochem. parameters such as lipophilicity and thermosensitivity, a series of cis-tris nongeminal [N3P3(R1-4)3(Ra-f)3] cyclotriphosphazenes [R1-4=diethylene glycol monomethyl ether (DEGME), triethylene glycol monomethyl ether (TEGME), methoxypolyethylene glycol (mPEG350), methoxypolyethylene glycol-550 (mPEG550); (2-5) resp.; Ra-f=pyrazole, 3,5-dimethylpyrazole, imidazole, 2-Me imidazole, benzimidazole, 5,6-di-Me benzimidazole, [2(a-f), 3(a-f), 4(a-f), 5(a-f)] resp.] were synthesized and fully characterized by mass, 31P and 1H NMR spectroscopies. Solubility and thermosensitivity based on substituent dependent LCST (lower critical solution temperature) behavior of all synthesized mols. are investigated. Each compound analyzed by HPLC to determine the lipophilicity values (logPo/w) between n-octanol and water. A good correlation (r = 0.9975 and R2 = 0.9948) was observed between the exptl. determined logPo/w and estimated milogP values. The results showed that LCST values of the reported compounds were linearly correlated with their lipophilicity values. In the experiment, the researchers used many compounds, for example, 2-(2-Methoxyethoxy)ethanol (cas: 111-77-3Synthetic Route of C5H12O3).

2-(2-Methoxyethoxy)ethanol (cas: 111-77-3) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly autoxidize to form hydroperoxides and dialkyl peroxides. If concentrated or heated, these peroxides may explode. To prevent such explosions, ethers should be obtained in small quantities, kept in tightly sealed containers, and used promptly.Synthetic Route of C5H12O3

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Fujihira, Yamato et al. published their research in Bulletin of the Chemical Society of Japan in 2022 | CAS: 112-49-2

2,5,8,11-Tetraoxadodecane (cas: 112-49-2) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. But on the other hand, ethers undergo cleavage by reaction with acids. Electron-deficient reagents are also stabilized by ethers. For example, borane (BH3) is a useful reagent for making alcohols. Pure borane exists as its dimer, diborane (B2H6), a toxic gas that is inconvenient and hazardous to use. Borane forms stable complexes with ethers, however, and it is often supplied and used as its liquid complex with tetrahydrofuran (THF).Reference of 112-49-2

Continuous-Flow Synthesis of Perfluoroalkyl Ketones via Perfluoroalkylation of Esters Using HFC-23 and HFC-125 under a KHMDS-Triglyme System was written by Fujihira, Yamato;Iwasaki, Hiroto;Sumii, Yuji;Adachi, Hiroaki;Kagawa, Takumi;Shibata, Norio. And the article was included in Bulletin of the Chemical Society of Japan in 2022.Reference of 112-49-2 This article mentions the following:

Herein, a method for the chem. transformation of two HFCs, viz was described. HFC-23 and HFC-125, based on the continuous-flow perfluoroalkylation of esters to synthesize the pharmaceutically and agrochem. vital trifluoromethyl and pentafluoroethyl ketones. The combination of a potassium base and a glyme solvent system was found to be the most effective. The proposed method was attractive for industrial use because it allows the consumption of a large volume of HFCs, promotes the synthesis of high-value medicinal compounds, and serves as an ideal alternative to the current HFC decomposition processes like thermal plasma treatment. In the experiment, the researchers used many compounds, for example, 2,5,8,11-Tetraoxadodecane (cas: 112-49-2Reference of 112-49-2).

2,5,8,11-Tetraoxadodecane (cas: 112-49-2) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. But on the other hand, ethers undergo cleavage by reaction with acids. Electron-deficient reagents are also stabilized by ethers. For example, borane (BH3) is a useful reagent for making alcohols. Pure borane exists as its dimer, diborane (B2H6), a toxic gas that is inconvenient and hazardous to use. Borane forms stable complexes with ethers, however, and it is often supplied and used as its liquid complex with tetrahydrofuran (THF).Reference of 112-49-2

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Jozwiak, Malgorzata et al. published their research in Journal of Molecular Liquids in 2020 | CAS: 112-49-2

2,5,8,11-Tetraoxadodecane (cas: 112-49-2) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. But on the other hand, ethers undergo cleavage by reaction with acids. Electron-deficient reagents are also stabilized by ethers. For example, borane (BH3) is a useful reagent for making alcohols. Pure borane exists as its dimer, diborane (B2H6), a toxic gas that is inconvenient and hazardous to use. Borane forms stable complexes with ethers, however, and it is often supplied and used as its liquid complex with tetrahydrofuran (THF).Recommanded Product: 112-49-2

Solvation enthalpy of selected glymes in the mixtures of N,N-dimethylformamide with propan-1-ol or methanol at 298.15 K. The solvent contribution to the solvation enthalpy of glymes was written by Jozwiak, Malgorzata;Ludzik, Katarzyna;Cokot, Maria;Jozwiak, Andrzej;Klys, Arkadiusz. And the article was included in Journal of Molecular Liquids in 2020.Recommanded Product: 112-49-2 This article mentions the following:

The enthalpies of solution of monoglyme, diglyme, triglyme, tetraglyme, pentaglyme and hexaglyme in N,N-dimethylforamide+propan-1-ol mixtures have been measured at 298.15 K. The preferential solvation process of glymes mols. in the mixtures of N,N-dimethylformamide with methanol or propan-1-ol has been discussed. Then the contribution of DMF, PrOH, and MeOH to the solvation enthalpy of group (-CH2- and -O-) of glymes has been calculated On the basis of the obtained data, the effect of the structural and energetic properties of the N,N-dimethylforamide+propan-1-ol mixtures on the solution enthalpy of glymes in this mixtures has been analyzed. In the experiment, the researchers used many compounds, for example, 2,5,8,11-Tetraoxadodecane (cas: 112-49-2Recommanded Product: 112-49-2).

2,5,8,11-Tetraoxadodecane (cas: 112-49-2) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. But on the other hand, ethers undergo cleavage by reaction with acids. Electron-deficient reagents are also stabilized by ethers. For example, borane (BH3) is a useful reagent for making alcohols. Pure borane exists as its dimer, diborane (B2H6), a toxic gas that is inconvenient and hazardous to use. Borane forms stable complexes with ethers, however, and it is often supplied and used as its liquid complex with tetrahydrofuran (THF).Recommanded Product: 112-49-2

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Liang, Jian-Hua et al. published their research in European Journal of Medicinal Chemistry in 2012 | CAS: 1132-95-2

1,1-Diisopropoxycyclohexane (cas: 1132-95-2) belongs to ethers. The oxygen atom in ethers are more electronegative than carbon, thus the hydrogens which are alpha to the ethers are more acidic than the simple hydrocarbons. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly autoxidize to form hydroperoxides and dialkyl peroxides. If concentrated or heated, these peroxides may explode. To prevent such explosions, ethers should be obtained in small quantities, kept in tightly sealed containers, and used promptly.Category: ethers-buliding-blocks

Structure-activity relationships of novel alkylides: 3-O-Arylalkyl clarithromycin derivatives with improved antibacterial activities was written by Liang, Jian-Hua;Li, Xiao-Li;Wang, He;An, Kun;Wang, Yue-Ying;Xu, Ying-Chun;Yao, Guo-Wei. And the article was included in European Journal of Medicinal Chemistry in 2012.Category: ethers-buliding-blocks This article mentions the following:

A series of novel alkylides, possessing 3-O-arylalkyl group instead of 3-O-cladinose, were designed, synthesized and evaluated for in vitro antibacterial activities. The increased potency clearly ranked by the order of 3-O-(3-aryl-2-propargyl), 3-O-(3-aryl-E-prop-2-enyl), 3-O-(3-aryl-propyl), and 3-O-(3-aryl-Z-prop-1-enyl) groups. Some alkylides, e.g. I, showed improved activities against inducible MLSB resistance and efflux resistance compared to the second-generation macrolides. Among them, I possessed comparable activities against erythromycin-susceptible Staphylococcus aureus, Streptococcus pneumoniae and Streptococcus pyogenes (MICs of 0.016-0.5 μg/mL). Moreover, I displayed dramatically enhanced potency against both efflux resistant and MLSB resistant strains (MICs of 0.125-0.5 μg/mL) resistant to clarithromycin and azithromycin (MICs of 1- >254 μg/mL), independent of methicillin-susceptible and methicillin-resistant pheno-types. In the experiment, the researchers used many compounds, for example, 1,1-Diisopropoxycyclohexane (cas: 1132-95-2Category: ethers-buliding-blocks).

1,1-Diisopropoxycyclohexane (cas: 1132-95-2) belongs to ethers. The oxygen atom in ethers are more electronegative than carbon, thus the hydrogens which are alpha to the ethers are more acidic than the simple hydrocarbons. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly autoxidize to form hydroperoxides and dialkyl peroxides. If concentrated or heated, these peroxides may explode. To prevent such explosions, ethers should be obtained in small quantities, kept in tightly sealed containers, and used promptly.Category: ethers-buliding-blocks

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Destrade, C. et al. published their research in Molecular Crystals and Liquid Crystals in 1976 | CAS: 39969-26-1

1-Methoxy-4-((4-propylphenyl)ethynyl)benzene (cas: 39969-26-1) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. Electron-deficient reagents are also stabilized by ethers. For example, borane (BH3) is a useful reagent for making alcohols. Pure borane exists as its dimer, diborane (B2H6), a toxic gas that is inconvenient and hazardous to use. Borane forms stable complexes with ethers, however, and it is often supplied and used as its liquid complex with tetrahydrofuran (THF).Computed Properties of C18H18O

Application of Raman diffusion to the determination of alkyl chain order in two homologous series of nematogenic compounds was written by Destrade, C.;Guillon, F.;Gasparoux, H.. And the article was included in Molecular Crystals and Liquid Crystals in 1976.Computed Properties of C18H18O This article mentions the following:

The Raman spectra of the homologous series p-methoxy-p’-alkyltolanes (I) and p-methoxybenzilidene-p’-alkylanilines (II; R = C1-C5 alkyl) are determined in isotropic, nematic, and solid phases. The resonance lines of cis and trans bonds were located at âˆ?00 cm-1. From the relative intensity of these lines vs. temperature, one could define a parameter (f), useful in the understanding of the ordering within the alkyl chain. Pretransitional effects, at the I â†?N transition, were observed, and established the existence of intramol. chain ordering in the isotropic phase even far from the transition point. This ordering did not exist in the case of nonnematogenic compounds From f was calculated the value of the order parameter S3. In the experiment, the researchers used many compounds, for example, 1-Methoxy-4-((4-propylphenyl)ethynyl)benzene (cas: 39969-26-1Computed Properties of C18H18O).

1-Methoxy-4-((4-propylphenyl)ethynyl)benzene (cas: 39969-26-1) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. Electron-deficient reagents are also stabilized by ethers. For example, borane (BH3) is a useful reagent for making alcohols. Pure borane exists as its dimer, diborane (B2H6), a toxic gas that is inconvenient and hazardous to use. Borane forms stable complexes with ethers, however, and it is often supplied and used as its liquid complex with tetrahydrofuran (THF).Computed Properties of C18H18O

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem