with indiummetal, and their reactions with carbonyl compounds and electron-deficientalkenes were examined. The reactions of simple 1,1-diiodoalkanes with indiummetal gave no defined products but benzal iodide gave stilbene in a moderate yield. α-Halo organoindium reagents drived from α,α-dibromo carbonyl compounds gave oxiranes and cyclopropanes upon the reactions with aldehydes and alkenes, respectively
Preparation of α-functionalized alkenylmagnesium reagents via a halide–magnesium exchange
作者:Jérôme Thibonnet、Viet Anh Vu、Laurent Bérillon、Paul Knochel
DOI:10.1016/s0040-4020(02)00439-8
日期:2002.6
A general preparation of alkenylmagnesium derivatives bearing an electron-withdrawing function in the alpha-position (Y=CN, CO2R, CONR2, SO2Ph) has been made possible by using a low temperature (-40 to -30degreesC) bromine-magnesium exchange with i-PrMgBr in THF. This reaction has also been used to prepare 5-magnesiated-1,3-dioxin-4-one derivatives bearing an alkoxy substituent in beta-position to the carbon-magnesium bond. (C) 2002 Published by Elsevier Science Ltd.
Ficini,J. et al., Bulletin de la Societe Chimique de France, 1972, p. 2388 - 2392
作者:Ficini,J. et al.
DOI:——
日期:——
Derdour, Aicha; Texier, Fernand, Canadian Journal of Chemistry, 1985, vol. 63, p. 2245 - 2252