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C 8 K‐Promoted Self‐Condensation and Self‐Condensation‐Cycloisomerization Reactions of α , β ‐Unsaturated Fischer Carbene Complexes
Author(s) -
Sierra Miguel A.,
RamírezLópez Pedro,
GómezGallego Mar,
Lejon Tore,
Mancheño María José
Publication year - 2002
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 - 10.1002/1521-3773(20020916)41:18<3442::aid-anie3442>3.0.co;2-z
Subject(s) - cycloisomerization , condensation , carbene , self condensation , chemistry , organic chemistry , catalysis , physics , condensation polymer , thermodynamics
Cunning carbene chemistry : Potassium‐graphite (C 8 K) promotes the self condensation (to give compounds 3 ) and self‐condensation‐cycloisomerization (to give compounds 4 ) of α , β ‐unsaturated Fischer carbene complexes 1 and 2 , respectively. The reaction occurs through radical‐anion intermediates that dimerize in a tail‐to‐tail fashion.