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diphenyl carbonate : ウィキペディア英語版
diphenyl carbonate

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Diphenyl carbonate is an acyclic carbonate ester.It is both as a monomer in combination with bisphenol A in the production of polycarbonate polymers〔
〕 and a product of the decomposition of polycarbonates.〔

==Production==
World production capacity of diphenyl carbonate was 254,000 tonnes in 2002, and phosgenation of phenol is the most significant route.〔(【引用サイトリンク】 url = http://www.inchem.org/documents/sids/sids/102090.pdf )Phosgenation of phenol can proceed under various conditions. The net reaction is as follows:
: 2 PhOH + COCl2 → PhOCO2Ph + 2 HCl
The use of toxic phosgene can be avoided by the oxidative carbonylation of phenol:
: 2 PhOH + CO + () → PhOCO2Ph + H2O
Dimethyl carbonate can also be transesterified with phenol:
: CH3OCO2CH3 + 2 PhOH → PhOCO2Ph + 2 MeOH
The kinetics and thermodynamics of this reaction are not favorable For example, at higher temperatures, dimethyl carbonate undesirably methylates phenol to give anisole.〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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