Chemo-enzymatic preparation of optically active endo-bicyclo[4.1.0]heptan-2-ols
摘要:
Resolutions of endo-bicyclo[4.1.0]heptan-2-ols were achieved by acylation in the presence of lipase from Candida antarctica (Novozym(R)). The (1S,2R,6R) enantiomers reacted faster and the enantiomeric ratios were between 60 and 800 for the 6-substituted bicycloalkanols. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.
METHOD OF PRODUCING BICYCLO[3.1.0] HEXANE DERIVATIVE USING ENZYME
申请人:HIROTSUKA Mitsuaki
公开号:US20110065934A1
公开(公告)日:2011-03-17
Production of a bicyclo[3.1.0]hexane derivative, useful as a metabotropic glutamate receptor modulator, becomes possible by a production method that includes converting a compound represented by Formula (II) into a compound represented by Formula (III) by reaction with an acyl group donor in the presence of a microorganism-derived enzyme, without using an expensive optically active trans hydroxy ester as a starting material and without employing a fluorination reaction requiring an ultralow temperature reaction. Furthermore, since asymmetric synthesis can be carried out in a stage closer to the final product, the production method is useful as a production method that can mass produce a bicyclo[3.1.0]hexane derivative.
PROCESS FOR PRODUCING OPTICALLY ACTIVE BICYCLO [3.1.0] HEXANE DERIVATIVE USING ENZYME
申请人:Sasaki Joji
公开号:US20120232304A1
公开(公告)日:2012-09-13
There is provided a process for producing a bicyclo [3.1.0] hexane derivative represented by the formula (I) and a salt thereof including; causing an enzyme to act on an optically inactive compound represented by the formula (II) causing an asymmetric acylation reaction and a highly-stereoselective conversion to an optically active compound represented by the formula (III); and converting the compound represented by the formula (III) to the compound represented by the formula (I) or a salt thereof.
Bleaching compositions, detergent products containing same and process for their use
申请人:THE PROCTER & GAMBLE COMPANY
公开号:EP0043173A1
公开(公告)日:1982-01-06
Peroxygen fabric bleaching compounds capable of yielding hydrogen peroxide in an aqueous solution are activated by long chain acyl compounds of the formula
wherein Z is a leaving group which can be certain enols, carbon acids or N-alkyl quaternary imidazoles. The activated bleaching compositions herein are stable and especially suitable for use at relatively low temperatures. Bleaching processes and detergent compositions containing the ; bleaching compositions are also described.
能在水溶液中产生过氧化氢的过氧织物漂白化合物是由式如下的长链酰基化合物活化的
其中 Z 为离去基团,可以是某些烯醇、碳酸或 N-烷基季咪唑。此处的活化漂白组合物非常稳定,尤其适合在相对较低的温度下使用。此外,还介绍了漂白工艺和含有这些漂白组合物的洗涤剂组合物。
Instantaneously curable composition
申请人:Nippon Paint Co., Ltd.
公开号:EP0206544A2
公开(公告)日:1986-12-30
A curable composition comprises (A) a polymer whose molecules have a main chain comprising carbon-carbon bonds and one or more isocyanatocarbonyl groups pendant to the main chain, the content of the isocyanatocarbonyl groups per polymer molecule being from 0.1 to 72.2% by weight, and (B) an active hydrogen atom-containing compound. Various polymers of the given type, including polymers having pendant isocyanatocarbonyl and/or isocyanato groups, are novel.
A functional polymer whose molecules have a main chain of carbon-carbon bonds and one or more pendant functional groups each appended to the main chain via a carbonyliminocarbonyl linkage, in which the or each functional group is chosen from fluorinated, aminotriazine, photosensitive, bicyclic and spiro structure-containing groups, and in which the content of the functional groups plus the carbonyliminocarbonyl linkages per molecule is from 0.1 to 99.9% by weight.