HIGHLIGHTS The first heterogeneous ZnCl2-catalyzed carboxylation of epoxides is presented. ZnCl2/Al2O3-TBAI is efficient, cheap, easily prepared and applied catalytic system. The reaction typically occurs under mild (60ºC, 4 atm) and solvent-free conditions. The catalyst (ZnCl2/Al2O3) and nucleophilic additive (TBAI) have been reused in five cycles. The catalyst also works in the reaction of epoxides with CS2 to form thiocarbonates.
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