有机化学 ›› 2022, Vol. 42 ›› Issue (8): 2449-2455.DOI: 10.6023/cjoc202203030 上一篇    下一篇

研究论文

碘化铵催化sp3 C—H双胺化反应合成喹唑啉-4(3H)-酮

喻晓哓, 柏汪恒, 朱建业, 张雨婷, 张梦茹, 吴际伟*()   

  1. 安徽科技学院化学与材料工程学院 安徽凤阳 233100
  • 收稿日期:2022-03-16 修回日期:2022-04-25 发布日期:2022-05-26
  • 通讯作者: 吴际伟
  • 基金资助:
    安徽省自然科学基金(2008085QB66); 安徽科技学人才引进(HCYJ201903); 安徽省大学生创新创业训练计划(S202010879140)

Synthesis of Quinazolin-4(3H)-ones via Ammonium Iodide-Catalyzed Dual Amination of sp3 C—H Bonds

Xiaoxiao Yu, Wangheng Bai, Jianye Zhu, Yuting Zhang, Mengru Zhang, Jiwei Wu()   

  1. College of Chemistry and Materials Engineering, Anhui Science and Technology University, Fengyang, Anhui 233100
  • Received:2022-03-16 Revised:2022-04-25 Published:2022-05-26
  • Contact: Jiwei Wu
  • Supported by:
    Natural Science Foundation of Anhui Province(2008085QB66); Anhui Science and Technology Talent Introduction Project(HCYJ201903); Innovation and Entrepreneurship Training Program for College Students in Anhui Province(S202010879140)

发展了一种在廉价碘化铵为催化剂的条件下, 利用芳烃苄位sp3 C—H氧化活化双胺化反应合成喹唑啉-4(3H)-酮类化合物的方法. 该反应中碘化铵作为催化剂, 过氧化氢叔丁醇(TBHP)作为氧化剂, 二甲基亚砜(DMSO)作为溶剂, 在100 ℃下反应20 h, 可以以中等到优良的产率得到喹唑啉-4(3H)-酮类化合物. 接着对该催化体系进行了机理研究和探索, 并推测了可能的反应机理. 该方法无需使用金属催化剂, 具有条件简单、底物适用范围广等优点, 因此具有潜在的工业应用的可能性.

关键词: 碘化铵催化, 喹唑啉-4(3H)-酮, sp3 C—H双胺化

A novel method for synthesizing quinazoline-4(3H)-ones was developed by using inexpensive ammonium iodide as catalyst via dual amination of aromatic benzylic position sp3 C—H bonds. In this reaction, ammonium iodide was used as catalyst, tert-butanol hydrogen peroxide (TBHP) was used as oxidant and dimethyl sulfoxide (DMSO) was used as solvent. The reaction was carried out at 100 ℃ for 20 h to obtain quinazoline-4(3H)-ones compounds with moderate to excellent yields. Furthermore, the mechanism investigations were conducted, and the possible reaction mechanism was depicted. Due to the method does not require use metal catalyst, and has the advantages of simple conditions and wide substrate application range, the present protocol has the potential to be widely applied.

Key words: ammonium iodine catalysis, quinazolin-4(3H)-ones, dual amination of sp3 C—H bonds