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An Efficient Catalyst System at Mild Reaction Conditions Containing Rare Earth Metal Complexes
Author(s) -
Wang WenZhen,
Wu Yang,
Duan YanShan,
Zhang JunTao,
Yang PengHui,
Ni BingHu,
Wu Ya
Publication year - 2013
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201300081
Subject(s) - chemistry , cycloaddition , catalysis , propylene oxide , selectivity , ammonium bromide , amine gas treating , metal , bromide , reactivity (psychology) , solvent , ligand (biochemistry) , oxide , rare earth , reaction conditions , inorganic chemistry , ammonium , organic chemistry , polymer chemistry , pulmonary surfactant , ethylene oxide , polymer , mineralogy , medicine , biochemistry , alternative medicine , receptor , pathology , copolymer
An efficient rare earth metal complex‐catalyzed cycloaddition reaction of CO 2 with propylene oxide using Hdpza (di(2‐pyrazyl)amine) as a N ‐donor ligand has been accomplished in good to excellent yields with high selectivity. The effects of different rare earth metal salts, ligands and reaction conditions were examined. Catalytic reaction tests demonstrated that the incorporation of ErCl 3 and Hdpza can significantly enhance the catalytic reactivity of the TBAB ( n Bu 4 NBr, tetra‐ n ‐butyl ammonium bromide) towards cycloaddition reaction of CO 2 and propylene oxide that produce cyclic carbonates under mild conditions without any co‐solvent.