Cp2TiCl2 used as a catalyst for the transesterification between dimethyl carbonate and phenol to diphenyl carbonate

Transesterification of dimethyl carbonate with phenol to diphenyl carbonate over V2O5 catalyst

“…In addition, it was found that when the molar ratio of DMC/phenol increased from 1.5:1 to 2.25:1, the yield of DPC became slightly decreasing. It was accordance with the literature [14] that the excess of phenol was in favor of the formation of DPC. So the optimal ratio of DMC/phenol was 1.5:1, the conversion of phenol and total yields of MPC and DPC were 42.0 and 40.1%, and the total selectivity of MPC and DPC was 95.5%.…”

“…So in order to reduce the social effects of pollution, several alternative green methods for DPC synthesis have been proposed, such as, oxidative carbonylation of phenol and transesterification reaction [7][8][9][10][11][12][13][14][15][16][17]. Among them, the oxidative carbonylation of phenol is considered to be a prospective route for the synthesis of DPC, but all suffer from the use of noble catalyst such as palladium complex and the low yield of DPC [18].…”

12-Molybdophosphoric acid supported on titania: A highly active and selective heterogeneous catalyst for the transesterification of dimethyl carbonate and phenol

“…previous studies [37], only phenol conversion of 25% and the turnover number of 72.2 were obtained over the HPMo-TiO 2 catalyst. And the turnover number for homogeneous TiCp 2 Cl 2 catalyst was just 92 mol (MPC+DPC)/mol Ti [29]. It was noticeable that HPMo/TiO 2 was potential for the industrial application.…”

“…Our group was devoted to developing homogeneous and heterogeneous catalysts for the transesterification of DMC and phenol [29][30][31][32][33][34]. Heteropoly compounds (HPCs) as environmentally-benign catalysts were widely used in homogeneous and heterogeneous catalysis due to their special hierarchical structure and physicochemical properties [35].…”

Transesterification of dimethyl oxalate with phenol over TiO2/SiO2: Catalyst screening and reaction optimization

“…As an important precursor for PCs production, DPC and its synthesis have received great attention. Several methods, including oxidative carbonylation of phenol and transesterification reactions, have been reported and developed for DPC synthesis 6–12. Among them, a three‐step reaction, consisting of preparation of dimethyl oxalate (DMO), transesterification of DMO with phenol to produce diphenyl oxalate (DPO), followed by decarbonylation of DPO to DPC (as shown in reactions 1–3) has been proposed.…”