STEREOCONTROLLED ASYMMETRIC-SYNTHESIS OF OPTICALLY-ACTIVE ACYLCYCLOPROPANE DERIVATIVES BY MICHAEL ADDITIONS OF BROMOMALONATE TO CHIRAL ALPHA-ACYLVINYLIC SULFOXIDES
K. Hiroi et Y. Arinaga, STEREOCONTROLLED ASYMMETRIC-SYNTHESIS OF OPTICALLY-ACTIVE ACYLCYCLOPROPANE DERIVATIVES BY MICHAEL ADDITIONS OF BROMOMALONATE TO CHIRAL ALPHA-ACYLVINYLIC SULFOXIDES, Chemical and Pharmaceutical Bulletin, 42(4), 1994, pp. 985-987
Michael addition of bromomalonate carbanions to chiral alpha-acylvinyl
ic sulfoxides and the subsequent intramoleculer alkylation yielded opt
ically active acylcyclopropane derivatives with high enantiomeric exce
ss. Stereochemistry of the product was determined by chemical correlat
ion to a compound of known absolute configuration. The mechanism for t
he asymmetric induction is deduced on the basis of the stereochemical
results obtained.