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Cationic Gallium(III) Halide Complexes: A New Generation of π‐Lewis Acids
Author(s) -
Tang Shun,
Monot Julien,
ElHellani Ahmad,
Michelet Bastien,
Guillot Régis,
Bour Christophe,
Gandon Vincent
Publication year - 2012
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201201202
Subject(s) - cationic polymerization , halide , gallium , catalysis , lewis acids and bases , chemistry , hydrolysis , polymer chemistry , organic chemistry
Ga‐neration X : Well‐defined neutral and cationic gallium(III) halide complexes have been synthesized and evaluated in catalysis. Both the (NHC)GaX 3 /AgSbF 6 catalytic mixture and isolated (NHC)GaX 2 + species function as exquisite π‐Lewis acids in typical GaX 3 ‐catalyzed reactions (see scheme). The cationic complexes are more active than GaX 3 and yet more resistant to hydrolysis, which allows lower catalytic loadings and faster reactions.