Photocatalytic generation of 1,4-disubstituted 1,2,3-triazoles under metal, oxidant and azide-free conditions

Changhong Liu, Dilshat Abdukerem, Wenli Zhu, Kun Xia, Zechuan Mao, Ablimit Abdukader
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Abstract

Available online A mild and efficient photocatalytic-induced radical method has been developed for [4 ​+ ​1] cycloaddition reaction of 1,4-disubstituted 1,2,3-triazoles with N-tosylhydrazides and primary amines. The reaction is catalyzed by 20 ​mol% of I2 under metal, azide and oxidant-free conditions. The method is based upon the photocatalytic generation of allyl-type radicals, followed by the iodine-catalyzed production of azoalkenes, which react rapidly with various anilines.

Abstract Image

Abstract Image

在无金属、氧化剂和叠氮化物条件下光催化生成 1,4-二取代的 1,2,3-三唑
在线提供 一种温和高效的光催化诱导自由基方法已被开发出来,用于 1,4 二取代的 1,2,3 三唑与 N-对甲苯磺酰肼和伯胺的 [4 + 1] 环加成反应。该反应在无金属、叠氮化物和氧化剂的条件下,由 20 mol% 的 I2 催化。该方法以光催化生成烯丙基自由基为基础,然后在碘催化下生成偶氮烯,并迅速与各种苯胺发生反应。
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CiteScore
14.40
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