Selective transformation of nitriles into amides and carboxylic acids by an immobilized nitrilase
作者:Norbert Klempier、Anna de Raadt、Kurt Faber、Herfried Griengl
DOI:10.1016/s0040-4039(00)92623-6
日期:1991.1
Using an immobilized nitrilase from Rhodococcus sp. mild and selective hydrolysis of nitriles can be achieved even in the presence of acid or base sensitive groups under neutral conditions. This method is applicable to a broad range of substrates as exemplified by aliphatic, alicyclic, heterocyclic and carbohydrate type nitriles.
The present invention provides fused ring heterocycles as kinase modulators, pharmaceutical compositions containing these modulators, and methods of using these modulators to treat diseases mediated by kinase activity.
Methods of making intermediates from polyhydroxyalkanoates
申请人:——
公开号:US20030144551A1
公开(公告)日:2003-07-31
Methods of forming intermediates from PHAs are disclosed.
从PHA中形成中间体的方法已被披露。
Process for producing optically active 3-halogenocarboxylic acid ester and 3-azidocarboxylic acid ester
申请人:——
公开号:US20030225301A1
公开(公告)日:2003-12-04
A process for producing an optically active 3-azide-carboxylic acid ester by reacting an optically active 3-hydroxycarboxylic acid ester and a thionyl halide in the presence of a basic substance in an organic solvent to produce an optically active 3-halogenocarboxylic acid ester which is then reacted with an azide salt represented by the formula: MN
3
(wherein M is an alkaline metal) in water or a mixture of water and a water soluble organic solvent.
Two birds with one stone: The simultaneous production of two important bulk chemicals, methanol and ethylene glycol, from CO2 and ethylene oxide has been achieved under mild conditions by the highly efficient homogeneous catalytichydrogenation of ethylene carbonate in the presence of a (PNP)RuII catalyst (see scheme).