A chiral hydrobenzoin/Ca complex catalyzes the reaction of acetophenone and aliphatic aldehydes to give the corresponding aldol products in up to 91% ee.
Enantioselective Mukaiyama-aldol and aldol-dihydropyrone annulation reactions catalyzed by a tryptophan-derived oxazaborolidine
作者:E.J. Corey、Charles L. Cywin、Thomas D. Roper
DOI:10.1016/s0040-4039(00)60892-4
日期:1992.11
The (S)-tryptophan derived catalyst 1, has been used to effect enantioselective Mukaiyama-aldol and aldol-dihydropyrone annulation reactions of trimethylsilyloxy olefins and, dienes.
NARASAKA, KOICHI, PURE AND APPL. CHEM., 1985, 57, N 12, 1883-1886