Chinese Journal of Organic Chemistry ›› 2026, Vol. 46 ›› Issue (8): 3268-3275.DOI: 10.6023/cjoc202601013 Previous Articles     Next Articles

ARTICLES

非均相CuMgMn层状双氢氧化物无添加剂条件下高效催化级联反应合成喹唑啉与喹唑啉酮

吴曼, 姚杰, 房玉阜, 周维友*(), 钱俊峰, 戴璇*(), 何明阳   

  1. 常州大学石油化工学院 江苏常州 213164
  • 收稿日期:2026-01-12 修回日期:2026-03-19 发布日期:2026-04-27
  • 通讯作者: 周维友, 戴璇
  • 基金资助:
    常州市科学技术局(CJ20240054)

Efficient Synthesis of Quinazolines and Quinazolinones via Cascade Reactions over Heterogeneous CuMgMn Layered Double Hydroxide without Additives

Man Wu, Jie Yao, Yufu Fang, Weiyou Zhou*(), Junfeng Qian, Xuan Dai*(), Mingyang He   

  1. School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164
  • Received:2026-01-12 Revised:2026-03-19 Published:2026-04-27
  • Contact: Weiyou Zhou, Xuan Dai
  • Supported by:
    Changzhou Municipal Science and Technology Bureau(CJ20240054)

An efficient catalytic method based on CuMgMn-layered double hydroxide (LDH) is presented for the synthesis of quinazolines and quinazolinones via a cascade reaction between alcohols and diamines. The catalytic system operates without any additives, effectively promoting the cascade reaction and showing excellent performance with a range of alcohol substrates. The results indicate that the Cu and Mn active sites exhibit a synergistic effect in the reaction. Based on a series of control experiments, a plausible catalytic mechanism is proposed. Catalyst stability was confirmed through hot filtration and recycling experiments. When the reaction was scaled up by a factor of 10, both the catalytic activity and product yield remained stable.

Key words: quinazoline, cascade reaction, oxidative coupling, heterogeneous catalysis, additive-free