Chinese Journal of Organic Chemistry ›› 2022, Vol. 42 ›› Issue (8): 2449-2455.DOI: 10.6023/cjoc202203030 Previous Articles     Next Articles

ARTICLES

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)

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