ENANTIOSELECTIVE CYCLOPROPANATION OF ALLYLIC ALCOHOLS CATALYZED BY A CHIRAL DISULFONAMIDE-ALUMINUM COMPLEX

被引:55
|
作者
IMAI, N [1 ]
TAKAHASHI, H [1 ]
KOBAYASHI, S [1 ]
机构
[1] SAGAMI CHEM RES CTR, 4-4-1 NISHI OHNUMA, SAGAMIHARA, KANAGAWA 229, JAPAN
关键词
D O I
10.1246/cl.1994.177
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A chiral disulfonamide-alkylaluminum complex prepared from (1R,2R)-N,N'-bis(benzenesulfonyl)-1,2-cyclohexanediamine and trialkylaluminum or i-Bu2AlH has been found to catalyze a Simmons-Smith cyclopropanation of allylic alcohols with Et2Zn and CH2I2 to afford the corresponding cyclopropanes in excellent yields with high enantiomeric excesses.
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页码:177 / 180
页数:4
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