Enantioselective approach to butenolides upon reduction of alkoxycarbene complexes of chromium with chiral dihydropyridines
摘要:
Chromium alkoxycarbene complexes tethered to a triple bond react with a series of chiral dihydropyridines, among which is N-methyl-1,2-dihydronicotine, to give enantioselectively, upon cascade insertion reactions, polycyclic butenolides. (C) 2001 Elsevier Science Ltd. Air rights reserved.