CREATION OF CHIRALITY IN THE REACTION OF THE CHIRAL ESTER ENOLATE-IMINE CONDENSATION LEADING TO THE STEREODIVERGENT SYNTHESIS OF BETA-LACTAMS

被引:30
|
作者
SHIMIZU, M [1 ]
TERAMOTO, Y [1 ]
FUJISAWA, T [1 ]
机构
[1] MIE UNIV, DEPT CHEM MAT, TSU, MIE 514, JAPAN
关键词
D O I
10.1016/0040-4039(94)02327-8
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Stereocontrol at C-4 of the p-lactams possessing substituents at 3- and 4-positions in the ester enolate-imine condensation is studied using different metal enolates of the chiral esters possessing amino alcohols derived all from (+)-camphor as an auxiliary, and 4R- or 4S-beta-lactam is obtained in a highly stereoselective manner, respectively. The effects of the structure of the chiral auxiliary and the coordination ability of the heteroatoms in the ester part are also discussed.
引用
收藏
页码:729 / 732
页数:4
相关论文
共 41 条