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C02 is the main greenhouse gas , is important C1 resources . In recent years , the carbon dioxide fixed by the widespread concern of scientists , the C02 and epoxy compounds coupled to generate cyclic carbonate reaction is a successful example of the use of carbon dioxide . Cyclic carbonate is an important intermediate for organic synthesis , construction materials and raw materials . In this article , we synthesized achiral and chiral metal porphyrins , and applied to the coupling of the C02 and epoxy compounds : 1 . Alder Act to improve synthesis of four (4 - carboxybenzaldehyde yl ) porphyrin , prepared cobalt complexes ( TCPPCo ( II ) , ( III ) CF3COO , TCPPCo the TCPPCo ( III ) OAc TCPPCo ( III ) Br , TCPPCo (III) Cl ) . TCPPCo (Ⅲ) X / PTAT systems exhibit high catalytic activity , the coupling reaction of the C02 with the epoxy compound . 2 was synthesized by multi-step reaction with amino acids , binaphthol structure of chiral porphyrin ligand 7,8 A , 8b, and the synthesis of their Co complexes . Wherein the chiral catalyst with a binaphthol , the coupling reaction of the carbon dioxide with the epoxy compound at room temperature showed a certain enantioselectivity .
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