ASYMMETRIC METHYLENE TRANSFER-REACTIONS-I - ASYMMETRIC-SYNTHESIS OF OXIRANES FROM CARBONYL-COMPOUNDS BY METHYLENE TRANSFER-REACTION USING CHIRAL S-METHYL-S-NEOMENTHYL-N-TOSYL SULFOXIMINES
Ss. Taj et R. Soman, ASYMMETRIC METHYLENE TRANSFER-REACTIONS-I - ASYMMETRIC-SYNTHESIS OF OXIRANES FROM CARBONYL-COMPOUNDS BY METHYLENE TRANSFER-REACTION USING CHIRAL S-METHYL-S-NEOMENTHYL-N-TOSYL SULFOXIMINES, Tetrahedron : asymmetry, 5(8), 1994, pp. 1513-1518
The use of ylides prepared from (-)-S-methyl-S-neomenthyl-N-tosyl sulf
oximine, 10a, and its epimer at sulfur, 10b, as methylene transfer rea
gents for the conversion of prochiral carbonyl compounds to oxiranes h
as yielded chiral oxiranes with 56-86% enantiomeric excess.