75210-68-3Relevant academic research and scientific papers
Process for preparing 2-(4'-hydroxyaryl)-2-(4'-aminoaryl)-propanes
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, (2008/06/13)
A process for preparing 2-(4'-hydroxyaryl)-2-(4'-aminoaryl)-propanes of the general formula STR1 wherein R represents a hydrogen or halogen atom or an alkyl, aryl, nitro, nitrile, acyl, acyloxy or amino group, R1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R2 and R3, independently from each other, represent a hydrogen or halogen atom, a nitro group or an alkyl group having 1 to 4 carbon atoms, which comprises reacting (A) at least one isopropenyl phenol compound selected from the group consisting of isopropenyl phenol derivatives of the general formula STR2 wherein R is as defined, and di- to eicosa-mers of said isopropenyl phenol derivatives with (B) an aromatic amine of the general formula STR3 wherein R1 , R2 and R3 are as defined, in the presence of 0.00001 to 0.008 mole, per mole of said isopropenylphenol compound (A) calculated as a monomer, of a acid catalyst and in the presence or absence of a phenolic solvent.
