THE ASYMMETRIC-SYNTHESIS OF ALPHA-AMINO-ACIDS VIA THE ADDITION OF GRIGNARD-REAGENTS TO IMINE DERIVATIVES

被引:34
作者
HAMON, DPG
MASSYWESTROPP, RA
RAZZINO, P
机构
[1] Department of Organic Chemistry, University of Adelaide, Adelaide, SA 5001
关键词
D O I
10.1016/S0040-4020(01)90125-5
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The ester 8-phenylmenthyl N-Boc-glycinate 5a, undergoes free radical bromination by N-bromosuccinimide to give 8-phenylmenthyl N-Boc-bromoglycinate 8. Treatment of the bromide 8 with a variety of Grignard reagents at low temperature gave 8-phenylmenthyl (S)-N-Boc-2-alkylglycinates with high diastereoselectivity. Conditions were found for the hydrolysis of these derivatives with no racemization of the resultant amino acid.
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页码:5163 / 5178
页数:16
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