A facile chemoenzymatic route to enantiomerically pure oxiranes: building blocks for biologically active compounds
作者:Ulrich Goergens、Manfred P. Schneider
DOI:10.1039/c39910001064
日期:——
The enantiomerically purebuildingblocks (R)-and (S)-1–4 were prepared both by enantioselective, enzymatic hydrolysis and by acyl transfer, and subsequently converted into the corresponding enantiomerically pure oxiranes (R)- and (S)-7 and 8.
A method for producing optically pure propane-1,2-diol, including the method steps: a. hydrogenation of lactides, metal-catalysed heterogenous catalysis being carried out in the presence of hydrogen, a crude product containing propane-1,2-diol being produced, and b. dynamic, kinetic racemate resolution, propane-1,2-diol of an optical purity in the range of ≧99% e.e. being produced.
一种生产光学纯丙烷-1,2-二醇的方法,包括以下步骤:a. 对乳酸内酯进行加氢反应,在氢气存在下进行金属催化的异相催化,产生含有丙烷-1,2-二醇的粗品,b. 动力学立体异构体分离,生产光学纯度在≧99% e.e. 范围内的丙烷-1,2-二醇。
Enzymatic resolution of propylene glycol alkyl (or aryl) ethers and ether acetates
申请人:Resnick M Sol
公开号:US20050026260A1
公开(公告)日:2005-02-03
Glycol ether acetates, and in particular propylene glycol alkyl (or aryl) ether acetates, can be resolved enzymatically by enantioselective hydrolysis with a hydrolase at high concentrations of substrates; in some embodiments, the hydrolase is a lipase. Glycol ethers, and in particular propylene glycol alkyl (or aryl) ethers, can be resolved enzymatically by enantioselective transesterification with a hydrolase, in the presence of an acyl donor, at high concentrations of substrates; in some embodiments, the hydrolase is a lipase.