METHOD FOR PREPARING A HYDROXYLATED ARYLHYDRAZINE, INTERMEDIATE PRODUCTS AND METHOD FOR OBTAINING SAME

摘要

The invention concerns a method for preparing a hydroxylated arylhydrazine using intermediates of general formula (II) wherein: A, X2, Y1, Y2 and n are as defined in Claim 1. The invention also concerns a method for obtaining intermediate products of formula (II) characterised in that it consists in carrying out a sulphite reduction of a diazonium salt wherein the hydroxyl group is protected, and corresponding to formula (VII) wherein: A, X1, X2, n, gamma and q are as defined in Claim 1.