A process is described for making 1,4-diamino-2-methoxymethylbenzene of formula (I), or a physiologically compatible salt of 1,4-diamino-2-methoxy-methylbenzene, of formula (I):
1
wherein n is a number from 0 to 2 and HX represents an inorganic or organic acid. The process includes reacting 2-methoxymethyl-4-nitrophenol with a halogenacetamide to form 2-(2-methoxymethyl-4-nitrophenoxy)acetamide; rearranging the 2-(2-methoxymethyl-4-nitrophenoxy)acetamide to form 2-methoxymethyl-4-nitroaniline and then catalytically hydrogenating the 2-methoxymethyl-4-nitroaniline and, when n=1 or 2, subsequently reacting with the inorganic or organic acid, to form the 1,4-diamino-2-methoxymethylbenzene of formula (I), or the salt if n=1 or 2. Compositions and methods of dyeing hair containing the 1,4-diamino-2-methoxymethylbenzene or its salt are also described.
描述了一种制备1,4-二
氨基-2-甲氧甲基苯的过程,或者制备1,4-二
氨基-2-甲氧甲基苯的生理兼容盐的过程,其中n是从0到2的数字,HX代表无机或有机酸。该过程包括将2-甲氧甲基-4-
硝基苯酚与卤代乙酰胺反应,形成2-(2-甲氧甲基-4-
硝基苯氧基)乙酰胺;将2-(2-甲氧甲基-4-
硝基苯氧基)乙酰胺重排,形成2-甲氧甲基-
4-硝基苯胺,然后催化氢化2-甲氧甲基-
4-硝基苯胺,并且当n=1或2时,随后与无机或有机酸反应,形成1,4-二
氨基-2-甲氧甲基苯的
化学式(I),或者如果n=1或2,则形成盐。还描述了含有1,4-二
氨基-2-甲氧甲基苯或其盐的染发剂的组合物和染发方法。