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Synthesis of Diphenyl Carbonate by Transesterification of DMC and PhOH over Lewis Acid Catalysts

Guang Li

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Abstract

Diphenyl carbonate(DPC) was synthesized by transesterification of dimethyl carbonate(DMC) with phenol(PhOH) in the presence of Lewis acid catalysts.Of the several catalysts tested,AlCl\-3 has highest activity for the reaction.When the reaction was carried out for 14h at n(PhOH)∶n(DMC)∶n(AlCl\-3)=4∶1∶0 06 and temperature 160-190 ℃,the total conversion of DMC was 25 5%,the selectivity for DPC was 87 5% and the yields of DPC,methylphenyl carbonate and anisole were 22 3%,2 2% and 1 0% respectively.

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Diphenyl carbonate(DPC) was synthesized by transesterification of dimethyl carbonate(DMC) with phenol(PhOH) in the presence of Lewis acid catalysts.Of the several catalysts tested,AlCl\-3 has highest activity for the reaction.When the reaction was carried out for 14h at n(PhOH)∶n(DMC)∶n(AlCl\-3)=4∶1∶0 06 and temperature 160-190 ℃,the total conversion of DMC was 25 5%,the selectivity for DPC was 87 5% and the yields of DPC,methylphenyl carbonate and anisole were 22 3%,2 2% and 1 0% respectively.

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Available abstract

Diphenyl carbonate(DPC) was synthesized by transesterification of dimethyl carbonate(DMC) with phenol(PhOH) in the presence of Lewis acid catalysts.Of the several catalysts tested,AlCl\-3 has highest activity for the reaction.When the reaction was carried out for 14h at n(PhOH)∶n(DMC)∶n(AlCl\-3)=4∶1∶0 06 and temperature 160-190 ℃,the total conversion of DMC was 25 5%,the selectivity for DPC was 87 5% and the yields of DPC,methylphenyl carbonate and anisole were 22 3%,2 2% and 1 0% respectively.

Key concepts: Dimethyl carbonate, Diphenyl carbonate, Transesterification, Chemistry, Catalysis, Anisole, Lewis acids and bases, Phenol

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