cerium (III) acetate monohydrate

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 3.0 g (32 mmol) of phenol, 25.8 mg (0.012 mmol Pd) of 5%-palladium/carbon, 4.2 mg (0.012 mmol) of cerium (III) acetate monohydrate, and 5.18 mg (0.24 mmol) of cesium bromide were charged in a 30-ml Hastelloy autoclave. After air in the system was replaced by carbon monoxide, 60 Kg/cm2 of carbon monoxide and 30 Kg/cm2 of dry air were introduced into the autoclave, followed by reaction at 100° C. for 3 hours. As a result of gas chromatographic analysis of the reaction solution, the yield of diphenyl carbonate was 9.4% (1.5 mmol). The yields of phenyl salicylate and p-phenoxyphenol which were produced as by-products were 0.32% (0.05 mmol) and 0.13% (0.02 mmol), respectively. After the completion of reaction, the gas phase contained 0.4% of carbon dioxide. were introduced into the autoclave followed by reaction at 100° C. for 3 hours As a result of gas chromatographic analysis of the reaction solution

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The same operation as that in Example 1 was performed using 4.5 g (49 mmol) of phenol, 12.7 mg (0.006 mmol Pd) of 5%-palladium/carbon, 2.0 mg (0.006 mmol) of cerium (III) acetate monohydrate, 127 mg (0.40 mmol) of tetra-n-butylammonium bromide and 21 mg (0.19 mmol) of hydroquinone. After reaction for 3 hours, diphenyl carbonate was obtained with a yield of 12.6% (3.0 mmol). Phenyl salicylate and p-phenoxyphenol were produced as by-products with yields of 0.30% (0.073 mmol) and 0.18% (0.044 mmol), respectively. The selectivity of p-phenoxyphenol was 1.4%. After reaction for 3 hours

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The same operation as that in Example 1 was performed using 4.5 g (49 mmol) of phenol, 12.7 mg (0.006 mmol Pd) of 5%-palladium/carbon, 2.0 mg (0.006 mmol) of cerium (III) acetate monohydrate, 127 mg (0.40 mmol) of tetra-n-butylammonium bromide and 21 mg (0.19 mmol) of hydroquinone. After reaction for 3 hours, diphenyl carbonate was obtained with a yield of 12.6% (3.0 mmol). Phenyl salicylate and p-phenoxyphenol were produced as by-products with yields of 0.30% (0.073 mmol) and 0.18% (0.044 mmol), respectively. The selectivity of p-phenoxyphenol was 1.4%. After reaction for 3 hours

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 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%. After reaction for 3 hours

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 3.0 g (32 mmol) of phenol, 25.8 mg (0.012 mmol Pd) of 5%-palladium/carbon, 4.2 mg (0.012 mmol) of cerium (III) acetate monohydrate, and 5.18 mg (0.24 mmol) of cesium bromide were charged in a 30-ml Hastelloy autoclave. After air in the system was replaced by carbon monoxide, 60 Kg/cm2 of carbon monoxide and 30 Kg/cm2 of dry air were introduced into the autoclave, followed by reaction at 100° C. for 3 hours. As a result of gas chromatographic analysis of the reaction solution, the yield of diphenyl carbonate was 9.4% (1.5 mmol). The yields of phenyl salicylate and p-phenoxyphenol which were produced as by-products were 0.32% (0.05 mmol) and 0.13% (0.02 mmol), respectively. After the completion of reaction, the gas phase contained 0.4% of carbon dioxide. were introduced into the autoclave followed by reaction at 100° C. for 3 hours As a result of gas chromatographic analysis of the reaction solution

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The same operation as that in Example 1 was performed using 4.5 g (49 mmol) of phenol, 12.7 mg (0.006 mmol Pd) of 5%-palladium/carbon, 2.0 mg (0.006 mmol) of cerium (III) acetate monohydrate, 127 mg (0.40 mmol) of tetra-n-butylammonium bromide and 21 mg (0.19 mmol) of hydroquinone. After reaction for 3 hours, diphenyl carbonate was obtained with a yield of 12.6% (3.0 mmol). Phenyl salicylate and p-phenoxyphenol were produced as by-products with yields of 0.30% (0.073 mmol) and 0.18% (0.044 mmol), respectively. The selectivity of p-phenoxyphenol was 1.4%. After reaction for 3 hours

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 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%. After reaction for 3 hours