A process for the preparation of 3-aminothiophenes or acid-addition salts thereof, which comprises reacting the corresponding 3-oxotetrahydrothiophenes with an acid-addition salt of hydroxylamine in the presence of a polar inert solvent and in the absence of a base at a temperature in the range of from 0.degree. to 200.degree. C.
一种制备
3-氨基噻吩或其酸加成盐的方法,包括在极性惰性溶剂存在且无碱存在的情况下,将相应的3-氧代
四氢噻吩与
羟胺酸加成盐反应,在0℃至200℃的温度范围内进行。