Primary intermediates for hair coloring compositions for oxidative dyeing of hair are compounds of the formula (1):
1
wherein R is hydrogen, hydroxy, nitro, amino, halogen, C
1
to C
5
alkyl or haloalkyl, C
1
to C
5
alkoxy or cyclic alkoxy, C
1
to C
5
hydroxyalkyl and C
1
to C
5
hydroxyalkoxy; Ar is an aromatic group; and y=1 to 3.
用于氧化染发的染发组合物的主要中间体是式 (1) 的化合物:
1
其中 R 是氢、羟基、硝基、
氨基、卤素、C
1
至 C
5
烷基或卤代烷基
1
至 C
5
烷氧基或环状烷氧基,C
1
至 C
5
羟烷基和 C
1
至 C
5
Ar 是芳香基团;y 等于 1 至 3。