‘One-pot’ synthesis of 1,1-disubstituted cyclopropanes in the presence of metal complex catalysts
作者:Usein M Dzhemilev、Askhat G Ibragimov、Leyla O Khafizova、Ilfir R Ramazanov、Dina F Yalalova、Genrikh A Tolstikov
DOI:10.1016/s0022-328x(01)01168-8
日期:2001.11
method for the synthesis of 1,1-disubstituted cyclopropanes starting from olefins, acetylenes and AlEt3 in the presence of Cp2ZrCl2, via a step involving in situ formation of aluminacyclopentanes and aluminacyclopentenes, respectively, was developed. Five-membered organoaluminium compounds obtained without preliminary isolation are transformed to cyclopropanes under the effect of Ni(acac)2 in combination