ASYMMETRIC TANDEM ADDITIONS TO CHIRAL NAPHTHYLOXAZOLINES - A NEW AND POTENT CHIRAL AUXILIARY RESULTING IN A MAJOR IMPROVEMENT IN CONVENIENCE AND EFFICIENCY

被引:60
作者
RAWSON, DJ [1 ]
MEYERS, AI [1 ]
机构
[1] COLORADO STATE UNIV,DEPT CHEM,FT COLLINS,CO 80523
关键词
D O I
10.1021/jo00007a010
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Excellent diastereofacial selectivities over a wide range of temperatures (-78 to 25-degrees-C) were obtained with the title compounds with use of chiral oxazolines derived from (S)-valinol or (S)-tert-leucinol. These are the first useful levels of asymmetric induction observed without the presence of the chelating methoxyl groups. The dihydronaphthylcarbinols and aldehydes resulting from these additions were obtained in > 98% ee.
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页码:2292 / 2294
页数:3
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