Tandem Synthesis of 1,2,3-Thiadiazoles with 3,4-Dichloroisothiazoles and Hydrazines under External Oxidant- and Sulfur-Free Conditions
作者:Yue Zhang、Kun Li、Wei Gao、Xiaoyu Liu、Haolin Yuan、Liangfu Tang、Zhijin Fan
DOI:10.1021/acs.orglett.2c02595
日期:2022.9.16
1,2,3-Thiadiazoles are among the most important heterocyclic motifs, with wide applications in natural products and medicinal chemistry. Herein, we disclose a tandem reaction for the synthesis of structurally diverse 1,2,3-thiadiazoles from 3,4-dichloroisothiazol-5-ketones and hydrazines. This method is characterized by mild external oxidant- and sulter-free reaction conditions, a broad substrate scope
1,2,3-噻二唑是最重要的杂环基序之一,在天然产物和药物化学中具有广泛的应用。在此,我们公开了一种串联反应,用于从 3,4-二氯异噻唑-5-酮和肼合成结构多样的 1,2,3-噻二唑。该方法具有温和的外部氧化剂和无硫反应条件、广泛的底物范围和易于纯化的特点。