Month: February 2023

Design and synthesis of Sn-porphyrin based molecular gates was written by Guenet, Aurelie;Graf, Ernest;Kyritsakas, Nathalie;Hosseini, Mir Wais. And the article was included in Inorganic Chemistry in 2010.COA of Formula: C11H22O5 This article mentions the following:

Mol. gates, comprising 4-pyridinyl-substituted stannoporphyrin stator and axially-coordinated triethyleneglycol-bridged bis-1,3-dioxybenzene units having 2,6-pyridinedimethoxy coordination site as a rotor were designed to operate via coordination of metal ions to both bridging and porphyrin pyridine nitrogens. A series of the mol. gates were prepared and characterized, both in solution by ¹H NMR and in the solid state by x-ray diffraction on single crystals. The mol. system is based on a porphyrin core bearing at the meso positions either Ph or pyridyl groups as a stator, octahedral Sn(IV) cation located at the center of the porphyrin as a hinge, and different handles connected to the porphyrin through Sn-O axial bonds. The stability of the complexes in the presence of different acids is also reported. In the experiment, the researchers used many compounds, for example, 2-(2-(2-((Tetrahydro-2H-pyran-2-yl)oxy)ethoxy)ethoxy)ethan-1-ol (cas: 60221-37-6COA of Formula: C11H22O5).

2-(2-(2-((Tetrahydro-2H-pyran-2-yl)oxy)ethoxy)ethoxy)ethan-1-ol (cas: 60221-37-6) 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. 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).COA of Formula: C11H22O5

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

Synthesis of functionalized benzobarrelenes and azabenzobarrelenes by rhodium-catalyzed [2+2+2] cycloaddition was written by Miyauchi, Yuta;Shibata, Yu;Tanaka, Ken. And the article was included in Chemistry Letters in 2016.Application of 16356-02-8 This article mentions the following:

It has been established that a cationic rhodium(I)/H₈-BINAP complex catalyzes the [2+2+2] cycloaddition of cyclohexadiene- linked 1,7-diynes with monoynes to produce functionalized benzobarrelenes. Functionalized azabenzobarrelenes were also obtained by using BINAP as a ligand and nitriles as coupling partners. In the experiment, the researchers used many compounds, for example, 1,4-Dimethoxy-2-butyne (cas: 16356-02-8Application of 16356-02-8).

1,4-Dimethoxy-2-butyne (cas: 16356-02-8) 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. 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.Application of 16356-02-8

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

The effect of ortho-substitution on the efficacy of biphenyls in mediating electron transfer from lithium was written by Donohoe, Timothy J.;Kershaw, Neil M.;Baron, Ronan;Compton, Richard G.. And the article was included in Tetrahedron in 2009.Product Details of 3929-47-3 This article mentions the following:

A systematic study into the effect of increasing ortho-substitution of a range of biphenyls with respect to their ability to mediate electron transfer from Li metal is described. A synthetic study demonstrated the requirements for effective mediation. The electrochem. reduction of the mediators and of the 2 substrates was studied in THF, 0.1M TBAP, at Pt microelectrodes both at room temperature and at low temperature The formal potentials, E⁰_f extracted from the cyclic voltammograms, are in agreement with results of the synthetic study and computational calculations also provide a correlation. In the experiment, the researchers used many compounds, for example, 3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3Product Details of 3929-47-3).

3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3) 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.Product Details of 3929-47-3

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

One-pot preparation of arylalkynes by a tandem catalytic iodination of arenes and palladium-catalyzed coupling of iodoarenes with terminal alkynes was written by Wan, Shun;Wang, Sunewang R.;Lu, Wenjun. And the article was included in Journal of Organic Chemistry in 2006.Category: ethers-buliding-blocks This article mentions the following:

Iodination of activated arenes by air-oxidation was carried out in the presence of catalytic bismuth salts at room temperature Subsequently, the formed iodoarenes reacted with terminal alkynes to give arylalkynes under a selected palladium-catalyzed coupling condition in the same pot. In the experiment, the researchers used many compounds, for example, 4-Iodo-1-methoxy-2-methylbenzene (cas: 75581-11-2Category: ethers-buliding-blocks).

4-Iodo-1-methoxy-2-methylbenzene (cas: 75581-11-2) 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. But ether is more polar than alkenes. 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.Category: ethers-buliding-blocks

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

Application of bioelectrocatalysis as a method of bacterial classification was written by Takayama, Katsumi;Uejima, Akinori;Yoshimura, Tadayosi. And the article was included in Denki Kagakkai Gijutsu, Kyoiku Kenkyu Ronbunshi in 2013.SDS of cas: 605-94-7 This article mentions the following:

This paper proposes an electrochem. bacterial classification method based on bioelectrocatalysis. Five kinds of quinone compounds (2,3-dimethoxy-5-methyl-1,4-benzoquinone, 1,4-naphthoquinone, 2-methyl-1,4-naphthoquinone, 1,4-benzoquinone, and 2,6-dimethyl-1,4-benzoquinone) were used as electron mediators between the anode electrode and the bacterial redox respiratory chain. Escherichia coli (IAM 1264), Staphylococcus aureus (IAM 1011), Lactobacillus casei (IAM 12473), Lactobacillus rhamnosus (ATCC 7469), and Pseudomonas oleovorans (IAM 12410) were selected as typical bacterial cells for the classification test. The data of steady-state current obtained from 25 combinations of quinone and bacteria were analyzed based on principal component anal. Five bacteria were classified into three groups: Lactobacillus casei (IAM 12473) and Lactobacillus rhamnosus (ATCC 7469), Escherichia coli (IAM 1264) and Pseudomonas oleovorans (IAM 12460), and Staphylococcus aureus (IAM 1011). The Lactobacillus sp. group was closer to the Escherichia coli group than to the Staphylococcus aureus group. These results coincide with classifications based on the 16S rRNA-based sequence homol. In the experiment, the researchers used many compounds, for example, 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7SDS of cas: 605-94-7).

2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7) 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.SDS of cas: 605-94-7

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

An efficient entry to pyrrolo[1,2-b]isoquinolines and related systems through Parham cyclization was written by Ruiz, Javier;Ardeo, Ainhoa;Ignacio, Roberto;Sotomayor, Nuria;Lete, Esther. And the article was included in Tetrahedron in 2005.Category: ethers-buliding-blocks This article mentions the following:

Aryllithiums generated by lithium-iodine exchange underwent intramol. cyclization to give pyrrolo[1,2-b]isoquinolines, e.g, I, in high yields. The best results were obtained when Weinreb or morpholine amides were used as internal electrophiles. The procedure has been extended to the preparation of seven and eight membered rings, opening a route to benzazepine and benzazocine skeletons. In the experiment, the researchers used many compounds, for example, 3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3Category: ethers-buliding-blocks).

3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3) 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. 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

Poly(phenylenevinylene) analogs with ring substituted polar side chains and their use in the formation of hydrogen bonding based self-assembled multilayers was written by Benjamin, Iris;Hong, Haiping;Avny, Yair;Davidov, Dan;Neumann, Ronny. And the article was included in Journal of Materials Chemistry in 1998.Application of 1877-75-4 This article mentions the following:

Poly(arylenevinylene) homopolymers and copolymers with polar hydroxy and carboxy moieties attached to the aromatic Ph ring were prepared The copolymers and the related homopolymers are copoly[5-(2-hydroxyethoxy)-2-methoxy-1,4-phenylenevinylene/1,4-phenylenevinylene], co(PHydroxyV-PV), and copoly(5-carboxymethoxy-2-methoxy-1,4-phenylenevinylene/1,4-phenylenevinylene), co(PCarboxyV-PV). For co(PHydroxyV-PV) the photoluminescence and electroluminescence spectra can be adjusted over a range of 100 nm as a function of the percentage of the hydroxy-substituted Ph ring. For co(PCarboxyV-PV) the observed spectral features are a function of the pH from which the final conjugated polymer was prepared The optical d. and photoluminescence of co(PCarboxyV-PV) films prepared from solutions at pH = 12 were significantly blue-shifted compared to polymers prepared from pH = 2 solutions at up to 30% substitution at the Ph ring. The presence of the polar side chain was used to form self-assembled multilayer films, poly(ethyleneimine)/poly(styrenesulfonate)/co(PHydroxyV-PV), based on hydrogen bonding interactions rather than electrostatic forces. The luminescence spectra in the layered systems were blue-shifted compared to the spin coated films. In the experiment, the researchers used many compounds, for example, 2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4Application of 1877-75-4).

2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4) 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. But ether is more polar than alkenes. 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).Application of 1877-75-4

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

Identification and analysis of free and O-glycoside-bound volatile components in wild Rosa roxburghii juice was written by Zhou, Zhi;Wang, Xing-ping;Luo, Zu-you;Fan, Gang;Tian, Cheng;Tang, Qiao-yu;Pan, Si-yi. And the article was included in Shipin Kexue (Beijing, China) in 2012.Reference of 6972-61-8 This article mentions the following:

Wild Rosa roxburghii juice from Xuan En, E’ Zhou was extracted by headspace solid-phase microextraction (HS-SPME) to obtain free volatile components, and adsorbed with Amberlite XAD-2 column and hydrolyzed with β-glucosidase to release O-glycoside-bound volatile components. Both volatile compounds were analyzed by gas chromatog.-mass spectroscopy (GC-MS). The results indicated that there was a significant difference observed in the composition and contents of free volatile components and O-glycoside-bound volatile components. In total 38 free volatile compounds and 38 O-glycoside-bound volatile compounds were identified. The major free volatile compounds were (+)-limonene, leaf alc., Et butyrate, hexanol, styrene, Et isovalerate, 2,4-di-tert-butylphenol, γ-terpinene, β-myrcene, β-ocimene, 3-hexenyl butyrate, linalool, octanoic acid, Et caprylate and (-)-dipentene. Meanwhile, the major O-glycoside-bound volatile compounds were 4-hydroxycinnamic acid, 4’5′-dimethyl-2′-hydroxyacetophenone, octanoic acid, cinnamic acid, 2,4-di-tert-butylphenol, 3,4-dimethoxycinnamic acid, benzyl alc., hexanoic acid, 3,4,5-trimethoxyphenol, leaf alc. and 4-hydroxy-3-methoxycinnamic acid. In addition, 33 compounds were found only in the O-glycoside-bound volatile components, which were benzyl alc., phenylethyl alc., neroli, cinnamic acid, vanillic acid, 3-hydroxybutyric acid Et ester, eugenol, and so on. In the experiment, the researchers used many compounds, for example, 3-(2,4-Dimethoxyphenyl)acrylic acid (cas: 6972-61-8Reference of 6972-61-8).

3-(2,4-Dimethoxyphenyl)acrylic acid (cas: 6972-61-8) 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. 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.Reference of 6972-61-8

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

Formation of Enantiomerically Pure Luminescent Triple-Stranded Dimetallic Europium Helicates and Their Corresponding Hierarchical Self-Assembly Formation in Protic Polar Solutions was written by Barry, Dawn E.;Kitchen, Jonathan A.;Pandurangan, Komala;Savyasachi, Aramballi Jayant;Peacock, Robert D.;Gunnlaugsson, Thorfinnur. And the article was included in Inorganic Chemistry in 2020.Reference of 111-77-3 This article mentions the following:

Ditopic helicate ligands consisting of two enantiomeric naphthalene units connected to two diethylene glycol substituted pyridine-2,6-dicarboxamide moieties linked by a xylene spacer (L¹ and L²) were synthesized for the formation of dinuclear Eu^III luminescent chiral helical assemblies (Eu₂·L₃) in competitive organic and protic solvent media. Spectroscopic anal. revealed formation of the 2:3 (Eu₂·L₃) and 2:2 (Eu₂·L₂) species in methanolic solutions CD and circularly polarized luminescence (CPL) spectroscopy confirmed the chiral purity of the helical systems, while SEM imaging demonstrated the formation of hierarchical self-assemblies with spherical morphologies. Ligands L¹ and L² were synthesized for use in the formation of dinuclear Eu^III 2:3 (Eu₂·L₃) luminescent chiral helical assemblies in competitive media. CD and circularly polarized luminescence (CPL) spectroscopy confirmed the chiral purity of the enantiomeric helical systems, while the use of SEM imaging illustrated aggregation of the Eu₂·L¹₃ complex in both MeOH and MeOH/water solvent mixtures and the formation of hierarchical self-assemblies with spherical morphologies and diameter sizes ranging from 0.079 to 0.681μm. In the experiment, the researchers used many compounds, for example, 2-(2-Methoxyethoxy)ethanol (cas: 111-77-3Reference of 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. But ether is more polar than alkenes. 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 111-77-3

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

Nematic tolanes and acetylenes was written by Skelton, Graham W.;Dong, Dewen;Tuffin, Rachel P.;Kelly, Stephen M.. And the article was included in Journal of Materials Chemistry in 2003.Synthetic Route of C18H18O This article mentions the following:

The 1st liquid crystals incorporating a nonconjugated C-C triple bond in the terminal chain to exhibit a nematic phase above the m.p. are reported. A variety of compounds incorporating a C-C triple bond in the terminal chain or between two Ph rings were synthesized as part of a study of the effects of the shape, conformation and rigidity of the terminal chains of liquid crystals on their mesophase behavior. Related tolanes incorporating an alkenyloxy chain with an addnl. C-C double bond or a simple alkoxy chain as a terminal substituent also were prepared for comparison purposes. In the experiment, the researchers used many compounds, for example, 1-Methoxy-4-((4-propylphenyl)ethynyl)benzene (cas: 39969-26-1Synthetic Route of C18H18O).

1-Methoxy-4-((4-propylphenyl)ethynyl)benzene (cas: 39969-26-1) 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. 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.Synthetic Route of C18H18O

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