A convenient green synthesis of benzopyrazines and bis-benzopyrazines has been
performed by the condensation of diversely substituted diamines and dicarbonyl compounds in
water using indium powder as catalyst under controlled microwave exposure. The effects of
microwave power, and temperature on this reaction are investigated in detail to identify the best
condition. A wide range of diversely substituted diamines and dicarbonyl compounds produce
excellent yield of the corresponding benzopyrazines and bis-benzopyrazines. A comparative study
has also been made between microwave-induced procedure and conventional method. The present
method is atom-economical, environmentally friendly, and affords synthetically useful and
challenging products very rapidly.
一种便捷的绿色合成苯并
吡嗪和双苯并
吡嗪的方法已经通过将多种取代的二胺和二羰基化合物在
水中,以
铟粉作为催化剂,在受控的微波照射下进行冷凝反应。详细研究了微波功率和温度对该反应的影响,以确定最佳条件。多种取代的二胺和二羰基化合物可以产生相应苯并
吡嗪和双苯并
吡嗪的优良产率。还对微波诱导的方法与传统方法进行了比较研究。该方法具有原子经济性、环保性,能够快速提供合成上有用且具有挑战性的产品。