The transesterification of dimethyl oxalate (DMO) with phenol todiphenyl oxalate (DPO) followed by decarbonylation of DPO to DPC is a promisingnon-phosgene route.

• 以苯酚和草酸二甲酯(DMO)酯交换合成DPC为一条具有广阔发展前景的非光气法绿色合成工艺路线。