Process of producing a naphthyridine or quinoline compound of the formula: ##STR1## wherein R.sub.2, R.sub.3, R.sub.4, and R.sub.6 can be alkyl, and R.sub.1 is nitrogen or CH. The corresponding pyridyl- or phenylaminomethylenemalonic acid diester is cyclized to yield said compound and an alcohol. The malonic acid diester at below reaction temperature is added to a solvent, e.g., diphenyl benzene, at above reaction temperature in proportion so that the mixture attains reaction temperature. Good yields at high throughputs are achieved.
生产
萘啶或
喹啉化合物的过程,其
化学式为:##STR1##其中,R.sub.2、R.sub.3、R.sub.4和R.sub.6可以是烷基,而R.sub.1是氮或CH。相应的
吡啶基或苯基
氨基
甲基丙二酸二酯被环化以产生所述化合物和一个醇。在低于反应温度的条件下,将
丙二酸二酯加入溶剂(例如二苯基苯),在高于反应温度的条件下按比例混合,使混合物达到反应温度。可以实现高产量的良好收率。