Hydroquinone → Diphenyl carbonate

Participants

Reaction Steps

The same operation as that in Example 1 was performed using 3.1 g (33 mmol) of phenol, 25.5 mg (0.012 mmol Pd) of 5%-palladium/carbon, 4.0 mg (0.012 mmol) of cerium (III) acetate monohydrate, 101 mg (0.24 mmol) of tetraphenylphosphonium bromide and 13 mg (0.12 mmol) of hydroquinone. After reaction for 3 hours, diphenyl carbonate was obtained with a yield of 23.7% (3.9 mmol). Phenyl salicylate and p-phenoxyphenol were produced as by-products with yields of 0.55% (0.090 mmol) and 0.15% (0.025 mmol), respectively. The selectivity of p-phenoxyphenol was 0.6%.

Provenance & Evidence