(EN)
Primary intermediates for hair coloring compositions for oxidative dyeing of hair are compounds of formula (I): wherein R is selected from C1 to C5 alkyl or hydroxyalkyl, a C3 to C6 cyclic ring containing hetero atoms selected from O, S and N atoms, and -CH2-Ar where Ar is an aromatic ring wherein the aromatic ring may be substituted with one or two hydroxy C1 to C3 alkoxy, or amino groups.
(ZH) 用于氧化性染发的染发组合物的主要中间体是式(1)化合物，其中R选自C1－C5烷基或羟基烷基、含有选自O、S和N原子的杂原子的C3－C6环和－CH2－Ar，其中Ar是芳环，并且所述芳环可被一个或两个羟基、C1－C3烷氧基或氨基取代。
