Direct Carboxylation of Diols and Polyols

6 Reaction Mechanisms in the Direct Carboxylation of Alcohols, Polyols. 

The produced glycerol carbonate has been used as platform molecule for the synthesis of several chemicals, including epichlorohydrin [106]. 

4 Oxidative Carboxylation of Olefins to Afford Cyclic Carbonates 

The oxidative carboxylation of olefins appears to be an interesting approach to the synthesis of cyclic carbonates from cheap and easily available reagents such as olefins, non-02-free CO2, and air (6.17) mostly under heterogeneous catalysis. 

Cat = RhClPs (P = PEtzPh, PEtPh2 RhCIL2 (L2 = diphos, dipy) 

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