Synthesis of Cyclic Carbonates Catalysed by Chromium and Aluminium Salphen Complexes

Chromium and aluminium salphen complexes have been found to display remarkable catalytic activity in the synthesis of cyclic carbonates from a range of epoxides and carbon dioxide. The Al(salphen) complex is more reactive towards terminal epoxides at ambient temperature and pressure, whereas the Cr(...

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Bibliographic Details
Published in:Chemistry : a European journal 2016-02, Vol.22 (6), p.2100-2107
Main Authors: Castro-Osma, José A., North, Michael, Wu, Xiao
Format: Article
Language:English
Subjects:
Aluminium
Aluminum
Ambient temperature
Bacteriology
Carbon dioxide
Carbonates
Catalysis
Catalytic activity
Chemical synthesis
Chemistry
Chromium
cyclic carbonates
Epoxides
High temperature
homogeneous catalysis
Pressure
salphen ligands
Synthesis
Terminals
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Summary:Chromium and aluminium salphen complexes have been found to display remarkable catalytic activity in the synthesis of cyclic carbonates from a range of epoxides and carbon dioxide. The Al(salphen) complex is more reactive towards terminal epoxides at ambient temperature and pressure, whereas the Cr(salphen) complex exhibits higher catalytic activity towards more challenging internal epoxides at elevated temperature and pressure. Have you got the metal for it? Diethylamino‐substituted chromium and aluminium salphen complexes both catalyse the synthesis of cyclic carbonates from epoxides and carbon dioxide, but show different substrate preferences. The chromium complex is best for internal epoxides whilst the aluminium complex is best for terminal epoxides.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201504305