1018853-62-7Relevant articles and documents
PROCESS FOR THE CATALYTIC SYNTHESIS OF DIARYL ETHERS
-
Page/Page column 4-5, (2009/06/27)
Described is a process for preparing diaryl ethers of the formula (I) [in-line-formulae]Ar—O—Ar′??(I)[/in-line-formulae]In which Ar is an aryl or substituted aryl group and Ar′ is an aryl, substituted aryl, heteroaryl or substituted heteroaryl group,by reacting an aryl of formula (II) or a aryloxy salt of formula (III) [in-line-formulae]Ar—OH ??(II)[/in-line-formulae] [in-line-formulae]Ar—OR ??(III)[/in-line-formulae]In which Ar has the same meaning as in formula (I) and R is an alkali metal,with an aryl or heteroaryl bromide of formula (IV) [in-line-formulae]Ar′—Br ??(IV)[/in-line-formulae]In which Ar′ has the same meaning as in formula (I),characterized in that the reaction is carried out in the presence of a copper(I)salt and a 1-substituted imidazole as catalyst system.