Proprietes photochimiques du dimethyl-2,4 iodo-3 pentene-2, des iodo-1 cycloalcenes, des (halogenomethylene) cycloalcanes et des (dihalogenomethylene) cyclohexes。形成 de produits 激进分子和 ioniques。机制。Donnees 光谱 UV、IR、RMN 1 H
Copper(I) Iodide-Assisted Halogen Exchange at Vinylic Positions. Conversion of Vinyl, Vinylene, and Vinylidene Bromides to the Corresponding Iodo Analogs
作者:Béatrice Bonnet、Yann Le Gallic、Gérard Plé、Lucette Duhamel
DOI:10.1055/s-1993-25999
日期:——
1,1-Diiodoalkenes 1 were readily prepared from carbonyl compounds 2 and diethyl diiodomethylphosphonate (3), generated in situ from commercial diethyl iodomethylphosphonate (4) or diethyl methylphosphonate (5). Starting from aldehydes, iodoacetylenes 6 could be obtained directly in situ by dehydrohalogenation of diiodoalkenes 1.