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Isolation of a Pyridinium Alkoxy Ion Bridged Dimeric Zinc Complex for the Coupling Reactions of CO 2 and Epoxides
Author(s) -
Kim Hoon Sik,
Kim Jai Jun,
Lee Byung Gwon,
Jung Ok Sang,
Jang Ho Gyeom,
Kang Sang Ook
Publication year - 2000
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(20001117)39:22<4096::aid-anie4096>3.0.co;2-9
Subject(s) - pyridinium , alkoxy group , chemistry , zinc , pyridine , coupling reaction , ion , lewis acids and bases , propylene oxide , polymer chemistry , catalysis , medicinal chemistry , photochemistry , stereochemistry , organic chemistry , copolymer , alkyl , polymer , ethylene oxide
The intermediate itself is an active species : The pyridinium alkoxy ion bridged zinc complex 1 , formed by the reaction of [(C 6 H 5 N) 2 ZnBr 2 ] and propylene oxide, is an intermediate in the coupling reaction of CO 2 and epoxides catalyzed by zinc( II ) complexes in conjunction with a Lewis base (here, pyridine). The X‐ray structure elucidation of 1 as well as activity tests with various zinc complexes containing substituted pyridine ligands provides insight into the mechanism of the coupling reaction.