SimplePhos as Efficient Ligand
for the Copper-Catalyzed Kinetic Resolution of Cyclic Vinyloxiranes
with Grignard Reagents
作者:Alexandre Alexakis、Renaud Millet
DOI:10.1055/s-2008-1077901
日期:——
Cyclic vinyloxiranes react with Grignard reagents under copper catalysis. Highly efficient kinetic resolution is achieved with the new SimplePhos family of chiral phosphorus ligands. Stereodivergence could be exploited to get either the SN2 or SN2′ product with up to 96% ee.
环状乙烯基环氧乙烷在铜催化下与格氏试剂反应。新型 SimplePhos 系列手性磷配体可实现高效动力学拆分。可以利用立体发散来获得 SN2 或 SN2' 产品,其 ee 高达 96%。
6-SUBSTITUTED 2-(BENZIMIDAZOLYL)PURINE AND PURINONE DERIVATIVES FOR IMMUNOSUPPRESSION
申请人:Neagu Irina
公开号:US20090069289A1
公开(公告)日:2009-03-12
The present invention provides novel purinones and purines useful for the prevention and treatment of autoimmune diseases, inflammatory disease, mast cell mediated disease and transplant rejection. The compounds are of the general formulae I and II: