PALLADIUM(0) CATALYZED AND NICKEL(0) CATALYZED METALLO-ENE-TYPE CYCLIZATIONS - STEREODIRECTING RESIDENT CHIRALITY

被引:34
作者
OPPOLZER, W
KELLER, TH
KUO, DL
PACHINGER, W
机构
[1] Département de Chimie Organique, Université de Genéve
关键词
D O I
10.1016/S0040-4039(00)88781-X
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Trans-cyclization products were selectively formed from C-6-substituted acetoxy-octadienes only via Ni(0) catalysis (1 → 2) and from C-4-substituted analogs under Pd(0)- and Ni(0) catalysis (7, 8 → 9). C-5-Substituted precursors gave mixtures of diastereoisomers. Nickel(0) catalyzed allylation/methoxycarbonylation of iodo diene 11 afforded 2-oxa-bicyclo[3.3.0]octanone 12 with highly diastereoselective generation of three stereogenic centers. © 1990.
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页码:1265 / 1268
页数:4
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