期刊
NEW JOURNAL OF CHEMISTRY
卷 45, 期 29, 页码 13096-13103出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1nj02460d
关键词
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资金
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [19KJA320007]
- project of scientific and technologic infrastructure of Suzhou [SZS201708]
- PAPD
A series of rare earth metal complexes based on Trost ligands were synthesized and successfully catalyzed the cycloaddition of carbon dioxide and epoxides. The optimal catalyst system was found to be 1 mol% Sm-based complex 1 with 2 mol% TBAB, forming monosubstituted cyclic carbonate at 70 degrees C. For the more challenging disubstituted epoxides, cyclic carbonates were obtained at elevated CO2 pressure of 0.7 MPa.
A series of rare earth metal complexes (Sm (1), Eu (2), Y (3), Yb (4), and Lu (5)) based on Trost ligands were synthesized and well characterized, and catalyzed the cycloaddition of carbon dioxide and epoxides successfully. The combination of 1 mol% Sm-based complex 1 with 2 mol% tetrabutylammonium bromide (TBAB) was proved to be the optimal catalyst system for the formation of the monosubstituted cyclic carbonate at 70 degrees C under the atmospheric pressure. While for the more challenging disubstituted epoxides, the adduct cyclic carbonates were successfully obtained when the pressure of CO2 was elevated to 0.7 MPa.
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