Phenol → Diphenyl carbonate

Participants

Reaction Steps

0.42 mol/h of phosgene were continuously passed through 141 g (1.50 mol) of phenol in the presence of 14.1 g (10 wt. % relative to the phenol) of a powdered titanium carbide from H. C. Starck at 140° C. in a plane ground joint flask equipped with flow spoilers, a gas-dispersion stirrer and reflux condenser. After approximately 2 hours' reaction time, phenol conversion was 18.2%, wherein 0.04 g of phenyl chloroformate and 28.7 g of diphenyl carbonate were formed. Selectivity for carbonates was approximately 99%.

Provenance & Evidence