Copper-Catalyzed Synthesis of Substituted 4-Acylpyrazole Derivatives through a Cascade Transformation from N-Propargylic Sulfonylhydrazones and Diaryliodonium Salts
作者:Yi-Hui Chen、Ren-Hao Li、Xin-Yang Fan、Zi-Lin Hu、Zhi-Kai Liu、Ying Yang、Hai-Tao Tang、Li Chen、Zhuang-Ping Zhan
DOI:10.1055/s-0037-1610271
日期:2018.10
A concise strategy for the synthesis of substituted 4-acylpyrazole derivatives from N-propargylic sulfonylhydrazones and diaryliodonium salts has been developed. The pyrazole derivatives are formed through a five-step cascade sequence that includes intramolecular cyclization, hydroxylation, elimination, copper-catalyzed aerobic oxidation, and intramolecular rearrangement.
已经开发了从 N-炔丙基磺酰腙和二芳基碘鎓盐合成取代 4-酰基吡唑衍生物的简明策略。吡唑衍生物通过五步级联序列形成,包括分子内环化、羟基化、消除、铜催化的有氧氧化和分子内重排。