CAS: 105-38-4; Vinyl Propionate

上下游产品

CAS号108-05-4 乙酸乙烯酯 | CAS号4387-13-7 bis(2-oxoethyl)... | CAS号79-03-8 丙酰氯 | CAS号74-86-2 乙炔 | CAS号54509-73-8 ethene | CAS号71-43-2 苯 | CAS号188754-03-2 methyl N-butyl-... | CAS号1445-91-6 (S)-(-)-1-苯基乙醇 | CAS号1517-69-7 (R)-(+)-1-苯基乙醇 | CAS号107832-32-6 R(+)-1-phenyl-1... | CAS号2759-55-9 Propanamide,N-(... | CAS号22323-82-6 (S)-(+)-甘油醇缩丙酮 | CAS号14347-78-5 (R)-(-)-甘油醇缩丙酮 | CAS号62244-19-3 [(4R)-2,2-dimet... | CAS号581-47-5 2,4'-联吡啶

📜乙酸乙烯酯置于四氯化锡 丙酸体系中,化学反应生成丙酸乙烯酯
参考文献:Transesterification Of Carboxylic Acids
标题:Transesterification Of Carboxylic Acids
摘要:羧酸可以在锡卤化物催化剂存在下与酯发生酯化反应,反应温度范围大约在0度至150度之间.

专利信息

专利号:EP-4092127-A1
优先权日:2021-05-18
标题:Enzyme-catalytic method for the direct stereoselective synthesis of gamma-(acyloxy) carboxylic acids
发明人：PARVE JAAN; KUDRJASHOVA MARINA; GATHERGOOD NICHOLAS; PARVE OMAR
权利人:TALLINN UNIV OF TECHNOLOGY
摘要:The present invention is a method for the stereoselective straightforward synthesis of gamma-acyloxy carboxylic acids of novel structure starting from racemic gamma-hydroxy carboxylic acid salts that are obtained by alkaline hydrolysis of the racemic gamma-lactones. The salt is acylated by enzyme catalysis in an organic solvent containing an acyl donor and an immobilised lipase, on stirring at room temperature (ca 20 °C) until reaching the conversion rate required. After that, the reaction mixture is acidified and extracted and the product treated with catalytic amount of para-toluenesulfonic acid in toluene during the time required for the relactonisation of the unreacted salt enantiomer. Thereafter, the target gamma-acyloxy carboxylic acid formed from one enantiomer of the starting compound and relactonised gamma-lactone formed from the other, unreacted enantiomer of the starting compound are isolated using a routine separation method, such as distillation, extraction with NaHCO3 water solution followed by acidification or column chromatography.

专利号:US-10011580-B2
优先权日:2016-04-21
标题:Diastereoselective synthesis of (±)-epianastrephin, (±)-anastrephin and analogs thereof
发明人：WALSE SPENCER S; KUZMICH DANIEL
权利人:US AGRICULTURE
摘要:A process for the synthesis of trans-fused γ-lactones having Formula (IV) from substituted cyclic ketones having Formula (I). A diastereoselective synthesis of (±)-epianastrephin (1) (wherein: R 1 is ethenyl, R 2 and R 3 is methyl, and n is 1), (±)-anastrephin (2) (wherein: R 2 is ethenyl, R 1 and R 3 is methyl and n is 1), and analogs thereof (wherein: R 1 is H, C 1-5 alkyl, C 2-6 alkenyl or C 2-6 alkynyl, R 2 is H, C 1-5 alkyl, C 2-6 alkenyl or C 2-6 alkynyl, R 1 and R 2 together with the carbon atom they are attached form a C 3-6 cycloalkyl ring, R 3 is C 1-5 alkyl and n is 0-2):

专利号:US-9630923-B2
优先权日:2013-07-09
标题:Biocatalyzed synthesis of the optically pure (R) and (S) 3-methyl-1,2,3,4-tetrahydroquinoline and their use as chiral synthons for the preparation of the antithrombic (21R)- and (21S)-argatroban
发明人：GRISENTI PARIDE
权利人:EUTICALS SPA; EUTICALS SPA
摘要:The present invention relates to the biocatalyzed synthesis of enantiomerically pure (3R) and (3S)-methyl-1,2,3,4-tetrahydroquinoline. Said enantiomerically pure compounds are useful as chiral synthons in organic synthesis and, in particular, for the preparation of diastereomerically pure (21R) and (21S)-agratroban and its analogs. New compounds used as intermediates in the process of the invention are also disclosed.

专利号:US-7268144-B2
优先权日:2004-04-14
标 题 :Regiospecific synthesis of rapamycin 42-ester derivatives
发明人：GU JIANXIN; CAI PING; RUPPEN MARK E
权利人:WYETH CORP
摘要:A method for the regiospecific synthesis of rapamycin 42-ester derivatives is described. The method involves lipase-catalyzed acetylation of 42-hydroxy of rapamycin with an acyl donor such as a vinyl ester, an isopropenyl ester or an anhydride in a suitable organic solvent.

专利号:US-2012184653-A1
优先权日:2011-01-18
标 题:Synthesis of linear phosphorus-containing functional fluorocopolymer
发明人：WANG LIANG; WANG VIKTORIA
权利人:WANG LIANG; WANG VIKTORIA
摘要:This invention relates to a synthesis of a linear fluorocopolymer having a plurality of pendant phosphorus-containing functional groups. The synthesized phosphorus-containing fluorocopolymer has chain linearity and narrow molecular weight distributions. It has applications as a lubricant additive that provides friction-reduction, anti-wear, and corrosion protection properties.

专利号:US-4476252-A
优先权日:1982-11-06
标题 :Process for the synthesis of polymers with laterally linked polyoxyalkylene chains and their use for the production of polyurethanes
发明人：ESSELBORN EBERHARD; FOCK JUERGEN
权利人:GOLDSCHMIDT AG TH
摘要:Process for the synthesis of polymers with laterally linked polyoxyalkylene chains by the free radical polymerization of polyoxyalkylene ethers with olefinic double bonds with other vinyl compounds, capable of copolymerizing wherein the polyoxyalkylene ethers of allyl and/or methallyl alcohol are copolymerized in a known manner with vinyl esters of lower carboxylic acids or mixtures of vinyl esters of lower carboxylic acids with up to 50 mole percent of esters of acrylic or methacrylic acid. The compounds can be used to advantage as reaction components having hydroxyl groups in the production of polyurethanes. In particular, they improve the mechanical properties of polyurethane foams, such as, for example, their compression hardness.