Process for preparing reactive xanthene dyestuffs

Abstract From the Canadian patent

An improved process for the preparation of a fiber-reactive dyestuff of the xanthylium-9-phenyl-2'-sulfonate series which contains in the 3position an amino radical of the formula -NR1R2 in which R1 and R2 each are hydrogen or optionally substituted alkyl and containing in 6-position an amino, radical of the formula in which R3 is hydrogen or alkyl, A is a mononuclear or binuclear aromatic radical, m is 0, 1 or 2, n is 0 or 1 and p is 1 or 2 and in which .gamma. is a fiber-, reactive group of the formula (2), or, (3), wherein R4 is hydrogen or alkyl q is 0 or 1 and Z is hydroxy, sulfato, phosphato, halogen or an acyloxy group, in which process 1 mol of a …