Selective Hydrogenation of Nitriles to Primary Amines Catalyzed by a Polysilane/SiO<sub>2</sub>
-Supported Palladium Catalyst under Continuous-Flow Conditions
Hydrogenation of nitriles to primary amines with heterogeneous catalysts under liquid‐phase continuous‐flow conditions is described. Newly developed polysilane/SiO2‐supported Pd was found to be an effective catalyst and various nitriles were converted into primary amine salts in almost quantitative yields under mild reaction conditions. Interestingly, a complex mixture was obtained under batch conditions
Processes for the preparation of odesmethylvenlafaxine, free from its dimer impurities
申请人:Niddam-Hildesheim Valarie
公开号:US20090234020A1
公开(公告)日:2009-09-17
The present invention provides isolated O-desmethylvenlafaxine impurities ODV-Dimer and ODV-N-Dimer, their use as a reference marker and reference standard, and a process for the preparation of O-desmethylvenlafaxine free from said impurities
Processes for the synthesis of O-desmethylvenlafaxine
申请人:Niddam-Hildesheim Valerie
公开号:US20080139849A1
公开(公告)日:2008-06-12
The present invention describes processes for the preparation of O-desmethylvenlafaxine and tridesmethylvenlafaxine, which may be used as an intermediate in preparing O-desmethylvenlafaxine.