Highly Enantioselective Epoxidation Catalyzed by Cinchona Thioureas: Synthesis of Functionalized Terminal Epoxides Bearing a Quaternary Stereogenic Center
A brilliant debut! Cinchonathioureas have been reported for the first time as catalysts in the area of asymmetric oxidations. They efficiently promote an unprecedented highlyenantioselectiveepoxidation of deactivated 1,1‐disubstituted alkenes to terminalepoxides containing a quaternarystereogeniccenter (see scheme).
Carbenes are highly active reaction intermediates, which can be used as reaction precursors to modify organisms, drugs, and material molecules. In this work, we realized a new cheap metal-catalyzed carbonylation of carbene to give propanedioic acid derivatives. With copper salt as the catalyst, synthetically important malonates and related compounds were produced in good yields under mild reaction
SHAWALI A. S.; FAHMI A. A., INDIAN J. CHEM. <IJOC-AP>, 1975, 13, NO 2, 105-108
作者:SHAWALI A. S.、 FAHMI A. A.
DOI:——
日期:——
1-Aminomethyl-1,2,3,4-tetrahydronaphthalenes and -indanes
申请人:ABBOTT LABORATORIES
公开号:EP0325963B1
公开(公告)日:1993-09-22
SUBSTITUTED BICYCLIC BIS-ARYL COMPOUNDS EXHIBITING SELECTIVE LEUKOTRIENE B 4? ANTAGONIST ACTIVITY, THEIR PREPARATION AND USE IN PHARMACEUTICAL COMPOSITIONS