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CC Bond Activation by Octacarbonyldicobalt: [3+1] Cocyclizations of Methylenecyclopropanes with Carbon Monoxide
Author(s) -
Kurahashi Takuya,
de Meijere Armin
Publication year - 2005
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200502596
Subject(s) - cobalt , carbon monoxide , chemistry , catalysis , atmosphere (unit) , carbon fibers , medicinal chemistry , inorganic chemistry , organic chemistry , materials science , composite number , physics , composite material , thermodynamics
Activation of CC bonds in cyclopropanes with a cobalt complex: Methylenecyclopropanes react with one equivalent of [Co 2 (CO) 8 ] under mild conditions to give 2‐methylenecyclobutanones in moderate to good yields (up to 85 %). The reaction also proceeds with a catalytic amount of the cobalt complex under an atmosphere of CO (balloon) to give products in good yields (up to 90 %; see scheme).