CONTROL OF ENANTIOFACIAL DIFFERENTIATION IN THE ADDITION-REACTION OF ORGANOMETALLICS TO A NITRONE IN THE PRESENCE OF AN EXTERNAL CHIRAL AUXILIARY

被引:37
作者
UKAJI, Y
HATANAKA, T
AHMED, A
INOMATA, K
机构
关键词
D O I
10.1246/cl.1993.1313
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
It was observed that differentiation of enantiotopic face in the addition reaction of organometallics to 3,4-dihydroisoquinoline N-oxide was well-regulated by the use of an external chiral auxiliary; i.e., Grignard reagents added from the si-face of the nitrone in the presence of bromomagnesium (2S,3R)-4-dimethylamino-1,2-diphenyl-3-methyl-2-butoxide, while dialkylzinc attacked from the re-face.
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页码:1313 / 1316
页数:4
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