An intermolecularanti-Markovnikovhydroamination of alkenes has been developed using triethyl phosphite and N-hydroxyphthalimide. The process tolerates a wide range of alkenes, including vinyl ethers, silanes, and sulfides as well as electronically unbiased terminal and internal alkenes. The resultant N-alkylphthalimides can readily be transformed to the corresponding primary amines. Mechanistic probes
Catalytic asymmetric Diels-Alder reactions of 2-pyrone derivatives
作者:István E Markó、Graham R Evans、Jean-Paul Declercq
DOI:10.1016/s0040-4020(01)89387-x
日期:1994.4
Cycloaddition reactions between the chiral 2-pyrone derivatives 9 and various dienophiles, catalysed by lanthanide shift reagents, afforded diastereomerically pure bicyclic lactones 3. A catalyticasymmetric version of these reactions, using optically active lanthanide catalysts, was successfully investigated.
Process for synthesizing biaryl inhibitors of farnesyl-protein transferase
申请人:Merck & Co., Inc.
公开号:US06239280B1
公开(公告)日:2001-05-29
The present invention is directed to a process for synthesizing 1,5 disubstituted imidazoles with biaryl components of the formula (I):
which are usefull as Farnesyl-Protein Transferase inhibitors.
The Lithium Diisopropylamide-induced Fragmentation of 1,3-Dithiolane Derivatives of Several Ketones Having α-Hydrogen
作者:Hideyuki Ikehira、Shigeo Tanimoto、Tatsuo Oida
DOI:10.1246/bcsj.56.2537
日期:1983.8
The reaction of 1,3-dithiolane derivatives of ketones having α-hydrogen with lithium diisopropylamide results in fragmentation to the corresponding thioketone followed by further conversion in a few steps to the other intermediate species which, on trapping with alkyl halide, leads to a vinylic sulfide and/or a sulfide bearing a secondary alkyl group.