INTRAMOLECULAR CYCLOADDITIONS OF METHYLENECYCLOPROPANES - A NOVEL CHELATION EFFECT

被引:41
作者
MOTHERWELL, WB
SHIPMAN, M
机构
[1] Department of Chemistry, Imperial College of Science, Technology and Medicine, South Kensington, London
关键词
D O I
10.1016/S0040-4039(00)74499-6
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
In contrast to the palladium catalysed reactions of methylenecyclopropane (1), cyclisation of methylenecyclopropane (7) yields trans fused bicyclo[3.3.0]octanes (8) and (9). Intramolecular chelation by an appended ether unit is proposed to account for the observed selectivities.
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页码:1103 / 1106
页数:4
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