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Lithium Organoaluminate Complexes as Catalysts for the Conversion of CO 2 into Cyclic Carbonates
Author(s) -
Guo Zhiqiang,
Xu Yuan,
Chao Jianbin,
Wei Xuehong
Publication year - 2020
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202000401
Subject(s) - chemistry , catalysis , lithium (medication) , iodide , denticity , lithium iodide , ammonium , ligand (biochemistry) , inorganic chemistry , medicinal chemistry , polymer chemistry , organic chemistry , crystal structure , electrode , medicine , biochemistry , receptor , electrolyte , endocrinology
Four lithium organoaluminate complexes containing bidentate pyrrolyl ligand were successfully synthesized, and their structural features were provided. These complexes were used as catalysts for chemical fixation of carbon dioxide with epoxides under mild conditions. Among them, complex {[C 4 H 3 N(AlEt 3 )(2‐CH 2 NHLi t Bu)][C 4 H 3 NLi(2‐CH 2 NH t Bu)]} 2 ( 4 ), in conjunction with tetrabutyl‐ammonium iodide (TBAI) as cocatalyst, exhibits higher catalytic activities than other lithium organoaluminates. Epoxides reacted with CO 2 at 50 °C and 1 atm pressure to give the corresponding cyclic carbonates in yields of 62–99 %.