Journal of Chemical Research

Preparation of 1-Aryl-2-bromo-3, 3-difluorocyclopropenes

ST Lin, LC Chen, CJ Lee

Index: Lin, Shaw-Tao; Chen, Li-Chwen; Lee, Chun-Jen Journal of Chemical Research, 2004 , # 5 p. 353 - 355

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Abstract

1-Aryl-2-bromo-3, 3-difluorocyclopropanes were prepared from the reaction of 2', 2'- difluorostyrene and dibromocarbene instead of from 1-aryl-2-haloacetylenes and difluorocarbene. These results are rationalised by the energy gap between HOMO (styrene), HOMO (acetylene) and LUMO (CX2). The title compounds were converted to methyl arylpropynoate in MeOH solution in quantitative yield.

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