3,5-二甲基苯胺的合成

Synthesis of 3, 5 - Dimethylaniline

以2,4-二甲基苯胺为原料,经乙酞化、硝化、脱乙酸基和重氮化脱氨基得至3,5-二甲基硝基苯,再经催化加氢还原得3,5-二甲基苯胺.产品总收率65%以上,含量98、5%以上.

3,5- Dinitrobenzene was successively prepared by acetylaton of 2,4 - dimethylaniline, then nitration, hydrolysis, diazotization and de - amination. After catalytic hydrogenation of 3, 5 - dinitrobenzene, the product 3, 5 - Dimethylaniline with an overall yield of 65% and a purity of 98.5% was obtained.