Patent ID: 8747645

Claim:
A process for preparing an unsymmetrical biaryl alcohol, the process comprising anodically dehydrodimerizing, by electrolysis, one or two monocyclic or bicyclic substituted ortho-alkoxyaryl alcohols of which an alcohol group is bound directly to an aromatic ring thereof, in the presence of at least one mediator selected from the group consisting of a partially fluorinated mediator and a perfluorinated mediator and a supporting electrolyte, wherein the monocyclic substituted ortho-alkoxyaryl alcohol may comprise R1 to R4 as a substituent and the bicyclic substituted ortho-alkoxyaryl alcohol may comprise R1 to R6 as a substituent, and wherein R1 to R6 are independently selected from the group consisting of a C 1 -C 10 -alkyl group, a halogen, alkyl(-{S or O}-alkylene)-, aryl(-{S or O}-arylene)-, a C 1 -C 10 -alkoxycarboxyl, a nitrile, a nitro, and a C 1 -C 10 -alkoxycarbamoyl group.