铜催化2-芳基吲哚酰基化/环化反应合成吲哚[2,1-α]异喹啉酮衍生物
收稿日期: 2024-05-21
修回日期: 2024-06-26
网络出版日期: 2024-07-25
基金资助
湖南省教育厅科学研究基金(23B0650); 湖南省教育厅科学研究基金(23A0503); 湖南省自然科学基金(2022JJ30419); 大学生创新创业训练计划(S202110549001S)
Copper(I)-Catalyzed Acylation/Cyclization of 2-Aryl-N-acryloyl Indole toward Indolo[2,1-α]isoquinoline Derivatives
Received date: 2024-05-21
Revised date: 2024-06-26
Online published: 2024-07-25
Supported by
Scientific Research Foundation of Hunan Provincial Education Department(23B0650); Scientific Research Foundation of Hunan Provincial Education Department(23A0503); Natural Science Foundation of Hunan Province(2022JJ30419); Innovation and Entrepreneurship Training Program for College Students(S202110549001S)
吲哚[2,1-α]异喹啉酮衍生物是一类重要的生物活性分子, 表现出良好的抗菌活性. 发展了一种以CuI为催化剂, 以叔丁基过氧化氢为氧化剂, 以2-芳基吲哚和苯甲酰肼为原料, 实现不饱和双键的自由基酰基化/环化反应构建吲哚[2,1-α]异喹啉酮衍生物的方法. 该方法具有良好的官能团耐受性, 一系列酰基取代的吲哚[2,1-α]异喹啉酮类化合物以中等到良好的收率得到. 自由基捕捉实验表明, 该反应可能经历了自由基历程.
关键词: 吲哚[2,1-α]异喹啉酮; CuI; 2-芳基吲哚; 苯甲酰肼; 酰基化/环化
杨梦娜 , 唐裕才 , 蒋洁 , 李佳丽 , 潘若涵 , 陈宇 , 段京林 , 张松柏 . 铜催化2-芳基吲哚酰基化/环化反应合成吲哚[2,1-α]异喹啉酮衍生物[J]. 有机化学, 2025 , 45(1) : 307 -318 . DOI: 10.6023/cjoc202405027
Indole[2,1-α]isoquinolines are an important class of bioactive molecules and show good antibacterial activity. In the present study, an efficient copper(I)-catalyzed acylation/cyclization has been developed for the construction of indolo[2,1- α]isoquinoline derivatives by utilizing 2-aryl-N-acryloyl indole and benzohydrazide as reactants in the presence of CuI as catalyst and tert-butyl hydroperoxide as oxidant. The present protocol exhibits good functional group tolerance, and a series of acylated indole[2,1-α]isoquinolines were synthesized in moderate to good yields. Radical trapping experiments indicated that the reaction may involve a radical process.
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