Tetrahedron

2-Vinyl-1, 1, 2-trihalocyclopropanes-valuable five carbon cyclopropane and cyclopropene synthetic intermediates

AR Al Dulayymi, MS Baird

文献索引：Al Dulayymi, Ahmad R.; Baird, Mark S. Tetrahedron, 1996 , vol. 52, # 33 p. 10955 - 10968

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被引用次数: 12

摘要

The dichloro-and dibromocarbene adducts of chloroprene and 2, 3-dichlorobutadiene are readily dehalogenated by reaction with methyllithium to give 1-halo-2-vinylcyclopropenes which on further lithium-halogen exchange give synthetically useful 1-lithio-2- vinylcyclopropenes. Trapping of 1-lithio-2-(1-chlorovinyl) cyclopropene with methyl chloroformate leads to a very unusual cyclononadienyne.