Versatile synthesis of bicyclo[4.3.0]nonenes and bicyclo[4.4.0]decenes by a domino Heck-Diels-Alder reaction

被引:66
作者
Ang, KH [1 ]
Brase, S [1 ]
Steinig, AG [1 ]
Meyer, FE [1 ]
Llebaria, A [1 ]
Voigt, K [1 ]
deMeijere, A [1 ]
机构
[1] UNIV GOTTINGEN, INST ORGAN CHEM, D-37077 GOTTINGEN, GERMANY
关键词
D O I
10.1016/0040-4020(96)00639-4
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Various 2-bromo-1,6- and 2-bromo-1,7-dienes were cyclized under palladium catalysis producing vicinal exodimethylenecycloalkanes which reacted with dienophiles (either present during the cyclization or added afterwards in a one-pot process) to give bicyclo[4.3.0]nonene and bicyclo[4.4.0]decene derivatives in good to excellent yields. Among the examples reported are the first cases of intramolecular Heck reactions with a (bromomethylene)cyclopropane starter or/and a methylenecyclopropane terminator which occur without ring opening of the cyclopropyl group. Copyright (C) 1996 Elsevier Science Ltd
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页码:11503 / 11528
页数:26
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