STEREOSELECTIVE SYNTHESIS OF CYCLOPROPANONE KETALS VIA SILYL CHLORIDE PROMOTED CYCLIZATION OF BETA-ZINCIOPROPIONATES

被引:9
作者
YASUI, K [1 ]
TANAKA, S [1 ]
TAMARU, Y [1 ]
机构
[1] NAGASAKI UNIV, FAC ENGN, DEPT APPL CHEM, NAGASAKI 852, JAPAN
关键词
D O I
10.1016/0040-4020(95)00331-2
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Alkyl, allyl and propargyl beta-iodopropionates undergo a cyclopropanation by the reaction with zinc-copper couple and TBDMSCI in THF to give 1-alkoxy-, 1-allyloxy-, and 1-propargyloxy-1-tert-butyldimethylsiloxycyclopropanes in moderate or good yields. beta-Iodo-alpha-methylpropionates 2 and 6 provide trans-5 and trans-8 selectively, while beta-iodobutyrates 3 and 7 furnish cis-5 and cis-8 selectively.
引用
收藏
页码:6881 / 6900
页数:20
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