Journal
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES
Volume 23, Issue 4-5, Pages 305-328Publisher
WORLD SCI PUBL CO INC
DOI: 10.1142/S1088424619300015
Keywords
porphyrin; oxazolidinones; cyclic carbonates; CO2; homogeneous systems
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The direct insertion of carbon dioxide (CO2) into three-membered rings, such as epoxides and aziridines, represents a relevant strategy to obtain cyclic carbonates and oxazolidinones, which are two useful classes of fine chemicals. The synthesis of these compounds can be efficiently catalyzed by a combination of metal porphyrin complexes and various co-catalysts in homogeneous systems. The catalytic efficiency of these systems is discussed herein by taking into account both the characteristics of the metals and the nature of the co-catalysts, either when used as two-component systems or when combined in bifunctional catalysts. Moreover, mechanistic proposals of the CO2 cycloaddition processes are reported to provide a rationale of catalytic cycles in order to pave the way for designing more active and efficient catalytic procedures.
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