Preparation of di-phenyl ester from phenol [closed]








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How to create di-phenyl ester from phenol in laboratory. What would be the steps. I am asking this question as it can not be done by Williamson ether synthesis. 




Diphenyl ethers have been prepared from condensation in melt phase of potassium phenoxide and aryl bromides in the presence of Copper and Copper(I) Chloride - J. Chem. Eng. Data, 1978, **23** (2), 185–186


US patent 4564712 A also describes a similar process


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