‘One-pot’ synthesis of 1,1-disubstituted cyclopropanes in the presence of metal complex catalysts

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• 作者：Dzhemilev ; Usein M. ; Ibragimov ; Askhat G. ; Khafizova ; Leyla O. ; Ramazanov ; Ilfir R. ; Yalalova ; Dina F. ; et. al.
• 关键词：Substituted cyclopropanes ; Olefins ; Acetylenes ; Aluminacyclopentanes ; Aluminacyclopentenes ; Catalysis
• 刊名：Journal of Organometallic Chemistry
• 出版年：2001
• 出版时间：November 25, 2001
• 年：2001
• 卷：636
• 期：1-2
• 页码：76-81
• 全文大小：245 K

文摘

A ‘one-pot’ catalytic 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 with allylhalogenides in the case of aluminacyclopentanes and alkylsulphates in experiments with aluminacyclopentenes.