Microwave-promoted racemization and dynamic kinetic resolution of chiral amines over Pd on alkaline earth supports and lipases
作者:A PARVULESCU、E VANDEREYCKEN、P JACOBS、D DEVOS
DOI:10.1016/j.jcat.2008.02.005
日期:2008.4.25
also was checked in the kineticresolution; no influence on the activity and enantioselectivity of the immobilized Candida Antarctica Lipase B (Novozym 435) was observed when both conventional and microwave heating were compared. The racemizationcatalysts were combined in one pot with the biocatalyst Novozym 435 to perform the dynamickineticresolution of benzylicamines under microwave irradiation
微波辐射用于伯苄胺的消旋和动态动力学拆分。当在微波条件下进行时,由5%Pd / BaSO 4和5%Pd / CaCO 3催化的外消旋反应更快,更具选择性。微波辐射的使用停止了副产物如仲胺和乙苯的形成。这与微波加热下金属部位的选择性加热有关。动力学分辨率也检查了微波辐照的影响。对固定化南极假丝酵母的活性和对映选择性没有影响当比较常规加热和微波加热时,观察到脂肪酶B(Novozym 435)。外消旋化催化剂与生物催化剂Novozym 435合并在一个锅中,以在微波辐射下进行苄胺的动态动力学拆分。当应用微波辐射时,不到1小时即可获得高产率(高达88%)的对映纯酰胺。
US5922899A
申请人:——
公开号:US5922899A
公开(公告)日:1999-07-13
Carbamoyl carboxylic acid amides
申请人:BASF Aktiengesellschaft
公开号:US05922899A1
公开(公告)日:1999-07-13
Carbamoylcarboxamides of the general formula I ##STR1## (R.sup.1 =unsubstituted or substituted alkyl, alkenyl, alkynyl; R.sup.2 =hydrogen, halogen, cyano, nitro, or unsubstituted or substituted alkyl, alkoxy, alkylthio, or an unsubstituted or substituted phenyl group which is bonded via oxygen or sulfur) and compositions comprising them, processes for their preparation, and the use of the compounds I and of the compositions.