American Chemical Society
ja054988e_si_003.cif (18.13 kB)

Lewis Acid-Catalyzed Rearrangement of Multi-Substituted Arylvinylidenecyclopropanes

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posted on 2005-10-26, 00:00 authored by Guang-Cai Xu, Le-Ping Liu, Jian-Mei Lu, Min Shi
An interesting rearrangement of arylvinylidenecyclopropanes having three substituents at the 1- and 2-positions of the corresponding cyclopropane catalyzed by Lewis acids to give 6aH-benzo[c]fluorine derivatives via a double intramolecular Friedel−Crafts reaction or to give an indene derivative via an intramolecular Friedel−Crafts reaction is described.