A novel process for producing 2-alkyl-3,5,6,7 or 8-substituted-4 (3H)-quinazolinones of the formula: ##STR1## where R, R.sup.1 and R.sup.2 are defined in the specification by reacting the appropriately N-acyl substituted aminobenzoic acids with ethylchloroformate followed by further reaction with ammonia or a primary amine.
一种生产2-烷基-3,5,6,7或8-取代-4(3H)-
喹唑啉酮的新工艺,其
化学式如下:##STR1## 其中R、R.sup.1和R.sup.2在规范中定义,通过将适当N-酰基取代的
氨基
苯甲酸与
氯甲酸乙酯反应,然后进一步与
氨或一级胺反应。