2-甲氧基-5-甲基苯胺

2-甲氧基-5-甲基苯胺

CAS号:120-71-8
英文名:2-Methoxy-5-methylaniline
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化合物简介
para-Cresidine is an intermediate that is used to create dyes and pigments. It is a light yellow to light brown solid with the chemical formula C8H11ON or CH3OC6H3(CH3)NH2. It appears as white crystals. Its carcinogen category is 2, and upon heating it produces toxic fumes including nitrogen oxides. It reacts with strong oxidants and some forms of plastic, rubber, and coatings. para-Cresidine is possibly carcinogenic to humans. It boils at 235 °C, melts at 51.5 °C, and is not very soluble in water.
基本信息
编号系统
物化性质
安全信息
生产方法及用途
生产方法
1.由对氯甲苯硝化、甲氧基化、还原而得。在15-20℃将混酸加入对氯甲苯中,在30℃搅拌2h,用水稀释,分离废酸,水洗得4-氯-3-硝基甲苯(收率30.6%)和4-氯-2-硝基甲苯(收率56.7%),用分馏和结晶法将两者分离,得4-氯-3-硝基甲苯。将其与甲醇及甲醇钠溶液反应,用硫酸中和分离,得3-硝基-4-甲氧基甲苯,收率85.6%。用水、铁粉、甲酸还原后,再用溶剂汽油多次萃取蒸馏而得。

2.由对甲酚硝化得到2-硝基-4-甲酚,再与硫酸二甲酯甲基化为3-硝基-4-对甲氧基甲苯,最后用硫化碱还原而得。
3.对氯-N,N-二乙基苄胺法 经硝化、甲氧基化、还原反应制得。
用途
适用于直接、分散、活性染料的合成。