Dimethyl Carbonate → Diphenyl carbonate

HRID 2051738Notes

Reaction equation

HRID 2051738 reaction equation
C(O[C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1)(=O)C.[C:11](=[O:16])([O:14][CH3:15])[O:12][CH3:13]>C[O-].C[O-].C[O-].C[O-].[Ti+4]>[C:11](=[O:16])([O:14][C:15]1[CH:7]=[CH:8][CH:9]=[CH:10][CH:5]=1)[O:12][C:13]1[CH:9]=[CH:10][CH:5]=[CH:6][CH:7]=1.[C:11](=[O:16])([O:14][CH3:15])[O:12][C:13]1[CH:9]=[CH:10][CH:5]=[CH:6][CH:7]=1

Participants

5

Reactant 2

HCID 12021Dimethyl CarbonateHCID 31229Phenyl acetate

Product 2

HCID 7597Diphenyl carbonateHCID 139482Carbonic acid, methyl phenyl ester

Reagents, catalysts & solvents 1

HCID 164767Titanium tetra(methanolate)Catalyst

Procedure

In the aforesaid apparatus, at 145° C., were charged 74 g of phenyl acetate and, gradually, 90 g of dimethyl carbonate and 1 g of titanium tetramethoxide. Methyl acetate being continuously distilled, after 4 hours there were obtained 80% by mole of diphenyl carbonate and 18% by mole of phenyl methyl carbonate, at selectivity higher than 98% and 97% conversion of methyl acetate.

Workup

  1. distillationMethyl acetate being continuously distilled, after 4 hours there

Sources & evidence

ORD record
ord-0f7fe020b9794718a68d3e52e70ca13f
Source dataset
uspto-grants-1980_01
Patent number
US04182726

Reaction notes

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