Synthesis and reactions of 5-benzylidene-2-phenyl-4,5-dihydro-1,3-oxazol-4-ones
摘要:
5-Benzylidene-2-phenyl-4,5-dihydro-1,3-oxazol-4-one was prepared by the cyclization of N-benzoyl-2-bromo-3-phenylpropenamide in the presence of sodium hydride.
Enantioselective Michael Additions to α,β-Unsaturated Imides Catalyzed by a Salen−Al Complex
作者:Mark S. Taylor、Eric N. Jacobsen
DOI:10.1021/ja037177o
日期:2003.9.1
conjugate addition of di- and trisubstituted nitriles to a wide range of acyclic alkyl- and aryl-substituted α,β-unsaturated imides. This new methodology provides access to multifunctional compounds that previously have not been readily accessible in enantioenriched form. Synthetic applications of these products include the preparation of enantiomerically enriched piperidines, as exemplified by an expedient