Category: ethers-buliding-blocks

Baird, Richard; Winstein, S. published the artcile< Neighboring carbon and hydrogen. XLVI. Spiro[4.5]-deca-1,4-dien-3-one from Ar1--5 participation>, COA of Formula: C11H16O2, the main research area is .

The formation of I from 4-HOC6H4(CH2)4O3SC6H4Br-4 (II) by Ar1-5 participation in the phenoxide anion of II was designated Ar1–5. This reaction was studied by kinetic investigation of the behavior of II in basic solution The reaction was favored in tert-BuOH but not in MeOH. Solvolysis rates for II, the Me ether (III), and p-BrC6H4S(O3)( CH2)4OH (IV) were determined in various solvents at different temperatures and concentrations With II, Ar1-5 participation was slightly more important in formolysis than with III. With II, III, and IV in neutral MeOH, Ar1-5 assisted ionization was negligible. The rate of methanolysis of II was increased by the addition of NaOMe. II appeared to be initially at least 90% in the phenoxide ion form. From the basic solvolysis reactions of II in MeOH and tert-BuOH were obtained (by extraction with pentane) 20 and 50-60% yields, resp., of I, m. 34-5° (pentane at -70°), b1.3 83.5-5°, v 1594, 1617, 1655, 1707 cm.-1 (CHCl3), λ242 mμ, ε 16,000; semicarba zone m. 224-5.5°; 2,4-dinitrophenylhydrazone m. 140.5-3.5°, λ 390, 253, 223 mμ, log ε 4.53, 4.21, 2.92. Catalytic reduction of I (reduced PrO2) gave a tetrahydro ketone; 2,4-dinitrophenylhydrazone (V), C16H20N4O4, m. 161.9-2.8°, λ 363, 229 mμ, ε 22,500 and 17,000. I underwent dienonephenol rearrangement (Wilds and Djerassi, CA 40, 72239), to give an almost quant. yield of 5,6,7,8-tetrahydro-2-naphthol (VI). Treating I in buffered formic acid gave 95% VI. p-MeOC6H4(CH2)3CO2H (VII), b.9.9 194-5.5°, m. 56-6.5°, was prepared from succinic anhydride, anisole, and AlCl3 via p-MeC6H4CO(CH2)2CO2H by the procedures of Fieser (CA 32, 84345) and Martin (CA 30, 67262) in 78.5% yield. VII, was reduced with LiAlH4 to give 93% p-MeOC6H4(CH2)4OH b8 160-60.9°, m. 3.0-4.0°, n25D 1.5248. This was converted to the p-bromobenzenesulfonate. VII and HBr gave pHOC6H4(CH2)3CO2H (VIII), which was reduced with LiAlH4 (4 mol/mol acid and refluxing 1 wk) to p-HOC6H4(CH2)4OH (IX) (92% yield), b0.5 144-6°, m. 55.5-8°, 56.5-7.8° (purified by sublimation). IX (25 g.) in 300 mL. pyridine at -30° treated with 50 g. p-BrC6H4SO2Cl, the solution warmed to 0° 1 h., poured into ice water, the oil extracted with ether, the ether washed, concentrated, the residue (a solution in CH2Cl2 partly crystallized after 1-2 wk) dissolved in 350-400 mL. MeOH, diluted with ice water until a 2nd phase appeared, seeded, and cooled 24 h. at 0° gave 50% II, m. 59.5-61.5° (CH2Cl2-hexane). II was also prepared by treating VIII with excess dihydropyran and a trace of H2SO4 and reducing the solution with LiAlH4 to give 4-[p-(2-tetrahydropyranoxy)phenyl]-1-butanol, which was converted to the p-bromobenzenesulfonate (X), m. 57-60° (ether-pentane), in 77% yield. This was hydrolyzed by gentle acid hydrolysis (304 g. X, 2.5 1. MeOH, 200 mL. H2SO4, 400 mL. water, left overnight in ice box) to give II (68% yield from VIII).

Journal of the American Chemical Society published new progress about Solvolysis. 52244-70-9 belongs to class ethers-buliding-blocks, and the molecular formula is C11H16O2, COA of Formula: C11H16O2.

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

Son, Eun Chae; Kim, Seung Yeon; Kim, Sung-Gon published the artcile< Squaramide-Catalyzed Asymmetric Intramolecular Oxa-Michael Reaction of α,β-Unsaturated Carbonyls Containing Benzyl Alcohol: Construction of Chiral 1-Substituted Phthalans>, Quality Control of 56724-03-9, the main research area is hydroxymethylphenylalkenyl carbonyl compound squaramide organocatalyst intramol oxa Michael reaction; dihydroisobenzofuranyl carbonyl compound enantioselective preparation.

Using cinchona squaramide-based organocatalyst, enones as well as α,β-unsaturated esters containing benzyl alc. provided their corresponding 1,3-dihydroisobenzofuranyl-1-methylene ketones and 1,3-dihydroisobenzofuranyl-1-methylene esters in excellent yields with high enantioselectivities. In addition, enantioenriched 1,3-dihydroisobenzofuranyl-1-methylene ketone obtained from the Wittig/oxa-Michael reaction cascade of 1,3-dihydro-2-benzofuran-1-ol.

Journal of Organic Chemistry published new progress about Aralkyl alcohols Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 56724-03-9 belongs to class ethers-buliding-blocks, and the molecular formula is C9H10O2, Quality Control of 56724-03-9.

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

Yoshii, Kazuki; Uto, Takuya; Tachikawa, Naoki; Katayama, Yasushi published the artcile< The effects of the position of the ether oxygen atom in pyrrolidinium-based room temperature ionic liquids on their physicochemical properties>, Product Details of C3H7BrO, the main research area is methylpyrrolidinium ionic liquid preparation viscosity conductivity conformation cathode potential.

This study investigated, using both exptl. and computational approaches, the effect of ether oxygen atoms on the physicochem. properties of room temperature ionic liquids RTILs consisting of bis(trifluoromethylsulfonyl)amide (TFSA-) with 1-methyl-1-propylpyrrolidinium (MPP+), 1-butyl-1-methylpyrrolidinium (BMP+), 1-methoxymethyl-1-methylpyrrolidinium (MOMMP+), 1-ethoxymethyl-1-methylpyrrolidinium (EOMMP+), and 1-methoxyethyl-1-methylpyrrolidinium (MOEMP+). The viscosity of the RTILs containing the ether oxygen atom was lower than that of the alkyl analogs. Moreover, the viscosity of EOMMPTFSA was lower than that of MOEMPTFSA, albeit EOMMPTFSA and MOEMPTFSA have the same mol. weight with ether oxygen atoms at different positions. Ab initio calculations revealed that the number of methylene groups between nitrogen and oxygen atoms in the cation structure profoundly impacted the local stable structure of the cation. Furthermore, we discussed the relationship between the transport properties and the spatial distribution of ions obtained by MD simulations. This result will be valuable in the design of functionalized RTILs, via the judicious tuning of the conformational flexibility of ether oxygen atoms in related ionic liquids

Physical Chemistry Chemical Physics published new progress about Activation energy. 6482-24-2 belongs to class ethers-buliding-blocks, and the molecular formula is C3H7BrO, Product Details of C3H7BrO.

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

Zarenezhad, Elham; Montazer, Mohammad Nazari; Tabatabaee, Masoumeh; Irajie, Cambyz; Iraji, Aida published the artcile< New solid phase methodology for the synthesis of biscoumarin derivatives: experimental and in silico approaches>, Application In Synthesis of 56724-03-9, the main research area is biscoumarin derivative synthesis solid phase methodol silico approach; Biscoumarin; MM-GBSA; MoO3-nanoparticle; Molecular dynamics simulations.

The simple and greener one-pot approach for the synthesis of biscoumarin derivatives using catalytic amounts of nano-MoO3 catalyst under mortar-pestle grinding was described. The use of non-toxic and mild catalyst, cost-effectiveness, ordinary grinding, and good to the excellent yield of the final product makes this procedure a more attractive pathway for the synthesis of biol. remarkable pharmacophores. Accordingly, biscoumarin derivatives were successfully extended in the developed protocols. Next, a computational investigation was performed to identify the potential biol. targets of this set of compounds In this case, first, a similarity search on different virtual libraries was performed to find an ideal biol. target for these derivatives Results showed that the synthesized derivatives can be α-glucosidase inhibitors. In another step, mol. docking studies were carried out against human lysosomal acid-alpha-glucosidase (PDB ID: 5NN8) to determine the detailed binding modes and critical interactions with the proposed target. In silico assessments showed the gold score value in the range of 17.56 to 29.49. Addnl., mol. dynamic simulations and the MM-GBSA method of the most active derivative against α-glucosidase were conducted to study the behavior of selected compounds in the biol. system. Ligand 1 stabilized after around 30 ns and participated in various interactions with Trp481, Asp518, Asp616, His674, Phe649, and Leu677 residues.

BMC Chemistry published new progress about Bond angle. 56724-03-9 belongs to class ethers-buliding-blocks, and the molecular formula is C9H10O2, Application In Synthesis of 56724-03-9.

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

Rianjongdee, Francesco; Atkinson, Stephen J.; Chung, Chun-wa; Grandi, Paola; Gray, James R. J.; Kaushansky, Laura J.; Medeiros, Patricia; Messenger, Cassie; Phillipou, Alex; Preston, Alex; Prinjha, Rab K.; Rioja, Inmaculada; Satz, Alexander L.; Taylor, Simon; Wall, Ian D.; Watson, Robert J.; Yao, Gang; Demont, Emmanuel H. published the artcile< Discovery of a Highly Selective BET BD2 Inhibitor from a DNA-Encoded Library Technology Screening Hit>, Name: 1,3-Dimethoxypropan-2-amine, the main research area is epigenetics chem probe BET BD2 DNA encoded library bromodomains.

Second-generation bromodomain and extra terminal (BET) inhibitors, which selectively target one of the two bromodomains in the BET proteins, have begun to emerge in the literature. These inhibitors aim to help determine the roles and functions of each domain and assess whether they can demonstrate an improved safety profile in clin. settings compared to pan-BET inhibitors. Herein, we describe the discovery of a novel BET BD2-selective chemotype using a structure-based drug design from a hit identified by DNA-encoded library technologies, showing a structural differentiation from key previously reported greater than 100-fold BD2-selective chemotypes GSK620, GSK046, and ABBV-744. Following a structure-based hypothesis for the selectivity and optimization of the physicochem. properties of the series, we identified 60 (GSK040)(I), an in vitro ready and in vivo capable BET BD2-inhibitor of unprecedented selectivity (5000-fold) against BET BD1, excellent selectivity against other bromodomains, and good physicochem. properties. This novel chem. probe can be added to the toolbox used in the advancement of epigenetics research.

Journal of Medicinal Chemistry published new progress about Bromodomain (BD2). 78531-29-0 belongs to class ethers-buliding-blocks, and the molecular formula is C5H13NO2, Name: 1,3-Dimethoxypropan-2-amine.

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

Pelter, Andrew; Ward, Robert S.; Rao, Ramohan R. published the artcile< An approach to the biomimetic synthesis of aryltetralin lignans>, HPLC of Formula: 52244-70-9, the main research area is methoxyphenylpropylquinonemethide ketal cyclization; quinonemethide ketal methoxyphenylpropyl cyclization; anisyltetralin; tetralin anisyl.

The aryltetralins I (R = H, R1 = R2 = H, OMe; R = R1 = OMe, R2 = H) were prepared from the corresponding 2,3,5,4-RR1R2(MeO)C6H(CH2)3CO2H in 6 steps, the key step being the biomimetic cyclization of the quinonemethide ketals II to I on treatment with BF3.Et2O.

Tetrahedron Letters published new progress about 52244-70-9. 52244-70-9 belongs to class ethers-buliding-blocks, and the molecular formula is C11H16O2, HPLC of Formula: 52244-70-9.

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

Mamidala, Ramesh; Biswal, Priyabrata; Subramani, M. Siva; Samser, Shaikh; Venkatasubbaiah, Krishnan published the artcile< Palladacycle-Phosphine Catalyzed Methylation of Amines and Ketones Using Methanol>, Application of C8H11NO, the main research area is amine ketone methylation palladacycle phosphine catalyst methanol.

Methylation of amines and ketones with palladacycle precatalyst was performed using methanol as an environmentally benign reagent. Various ketones and amines undergo methylation reaction to yield monomethylated amines or ketones in moderate to good isolated yields. Moreover, this protocol was tested for the chemoselective methylation of 4-aminobenzenesulfonamide. The scope of the reaction was further extended to the deuteromethylation of ketones.

Journal of Organic Chemistry published new progress about Amines Role: RCT (Reactant), RACT (Reactant or Reagent). 10541-78-3 belongs to class ethers-buliding-blocks, and the molecular formula is C8H11NO, Application of C8H11NO.

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

Aikawa, Haruo; Tago, Sakie; Umetsu, Kazuteru; Haginiwa, Naomichi; Asao, Naoki published the artcile< Gold-catalyzed substitution reaction with ortho-alkynylbenzoic acid alkyl ester as an efficient alkylating agent>, Name: 4-(4-Methoxyphenyl)-1-butanol, the main research area is alkynylbenzoic acid alkyl ester alc gold etherification; ether preparation; gold etherification catalyst; alkylating agent alkynylbenzoic acid alkyl ester.

Ortho-Alkynylbenzoic acid alkyl esters behave as alkylating agents in combination with gold catalysts. The reaction with alcs. occurs smoothly in the presence of catalytic amounts of Ph3PAuCl and AgOTf under mild conditions to produce the corresponding ether products in high yields. The protocol is also useful for Friedel-Crafts alkylation and N-alkylation of sulfonamides. The reaction likely proceeds through the gold-induced in situ construction of leaving groups and subsequent nucleophilic attack of nucleophiles, such as alcs., aromatic compounds, and sulfonamides.

Tetrahedron published new progress about Aliphatic alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 52244-70-9 belongs to class ethers-buliding-blocks, and the molecular formula is C11H16O2, Name: 4-(4-Methoxyphenyl)-1-butanol.

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

Yang, Xiaojuan; Liang, Jinying published the artcile< Alum: an efficient catalyst for trimethylsilylation of alcohols and phenols with hexamethyldisilazane>, Synthetic Route of 52244-70-9, the main research area is trimethylsilylation alc alum catalyst green chem hexamethyldisilazane.

A highly convenient method for the trimethylsilylation of alcs. and phenols via treatment by hexamethyldisilazane in the presence of alum as a catalyst has been developed. A wide variety of hydroxyl groups were selectively protected in CH3CN under mild conditions.

Asian Journal of Chemistry published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 52244-70-9 belongs to class ethers-buliding-blocks, and the molecular formula is C11H16O2, Synthetic Route of 52244-70-9.

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

Koch, Vanessa; Brase, Stefan published the artcile< An Intramolecular Iodine-Catalyzed C(sp3)-H Oxidation as a Versatile Tool for the Synthesis of Tetrahydrofurans>, Product Details of C11H16O2, the main research area is THF preparation regioselective; alc carbon hydrogen activation oxidation cyclization iodine catalyst.

The formation of ubiquitous occurring THF patterns has been extensively investigated in the 1960s as it was one of the first examples of a non-directed remote C-H activation. These approaches suffer from the use of toxic transition metals in overstoichiometric amounts An attractive metal-free solution for transforming carbon-hydrogen bonds into carbon-oxygen bonds lies in applying economically and ecol. favorable iodine reagents. The presented method involves an intertwined catalytic cycle of a radical chain reaction and an iodine(I/III) redox couple by selectively activating a remote C(sp3)-H bond under visible-light irradiation The reaction proceeds under mild reaction conditions, is operationally simple and tolerates many functional groups giving fast and easy access to different substituted tetrahydrofurans.

European Journal of Organic Chemistry published new progress about Alcohols Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 52244-70-9 belongs to class ethers-buliding-blocks, and the molecular formula is C11H16O2, Product Details of C11H16O2.

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