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Borate Esters as Alternative Acid Promoters in the Palladium‐Catalyzed Methoxycarbonylation of Ethylene
Author(s) -
Ferreira Alta C.,
Crous Renier,
Bennie Linette,
Meij Anna M. M.,
Blann Kevin,
Bezuidenhoudt Barend C. B.,
Young Desmond A.,
Green Mike J.,
Roodt Andreas
Publication year - 2007
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.200603751
Subject(s) - phosphonium , boric acid , catalysis , chemistry , boron , organic chemistry , ethylene , salicylic acid , cationic polymerization , palladium , medicinal chemistry , biochemistry
Out with convention! The use of borosalicylic acid, derived from boric and salicylic acids, as the acid promoter in the methoxycarbonylation of ethylene to give methyl propionate has been investigated (see scheme). Not only was moderate catalyst activity observed, but much lower formation of phosphonium salts occurred than with conventional acids.