Pyridinium‐functionalized metalloporphyrins as bifunctional catalysts for cycloaddition of epoxides and carbon dioxide | Zendy

Yi Jiajia | Zendy; Sun Shu | Zendy; Li Zhonglu | Zendy; Gao Xuyun | Zendy; Sun Xuzhuo | Zendy; Wang Ning | Zendy; Li Jun | Zendy

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Pyridinium‐functionalized metalloporphyrins as bifunctional catalysts for cycloaddition of epoxides and carbon dioxide

Author(s) -

Yi Jiajia,

Sun Shu,

Li Zhonglu,

Gao Xuyun,

Sun Xuzhuo,

Wang Ning,

Li Jun

Publication year - 2020

Publication title -

applied organometallic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.53

H-Index - 71

eISSN - 1099-0739

pISSN - 0268-2605

DOI - 10.1002/aoc.5382

Subject(s) - chemistry , cycloaddition , bifunctional , epoxide , catalysis , pyridinium , selectivity , solvent , molar ratio , carbon dioxide , porphyrin , polymer chemistry , organic chemistry , medicinal chemistry

New pyridinium‐functionalized metalloporphyrins MEtPpBr 4 (M = Zn 2+ , Co 2+ , Ni 2+ , Cu 2+ ; EtPp = 5, 10, 15, 20‐tetra(4‐(3‐(N‐ethyl‐4‐pyridyl)pyrazolyl)phenyl)porphyrin) were synthesized as bifunctional catalysts for the cycloaddition reactions of epoxides and CO 2 . The effects of catalyst loading, CO 2 pressure, reaction temperature and time on catalytic activity were investigated. ZnEtPpBr 4 ( 1 ) and CoEtPpBr 4 ( 2 ) exhibited efficient activities in the cycloaddition reactions of various epoxides with CO 2 as at 120 °C under 2 MPa of CO 2 pressure without solvent. Most of corresponding cyclic carbonates could be obtained in almost quantitative yields and > 99.9% selectivity with molar ratio of epoxide/catalyst 2222 after 8 hr of reaction.

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