铜催化5-氨基吡唑的脱氢自偶联/环化反应：哒嗪类化合物的合成与光物理研究
Copper-catalysed dehydrogenative self-coupling/cyclization of 5-aminopyrazoles: synthesis and photophysical study of pyridazines.
作者信息
Rastogi Gaurav K, Deb Mohit L, Baruah Pranjal K
机构信息
Department of Applied Sciences, GUIST, Gauhati University, Guwahati-781014, Assam, India.
Department of Applied Organic Chemistry, CSIR-NEIST, Jorhat 785006, Assam, India.
出版信息
Chem Commun (Camb). 2023 Aug 3;59(63):9642-9645. doi: 10.1039/d3cc02424e.
An interesting self-coupling/cyclization of 5-aminopyrazoles is revealed, which provides a variety of pyridazine cores in reasonable yields. In this reaction, C(sp)-C(sp) and N-N bond formation occurs simultaneously in one reaction vessel. The photophysical properties of the synthesized compounds were also studied and some of them exhibited fluorescence properties with good quantum yields. A radical mediated reaction mechanism is proposed with the help of control experiments.
揭示了5-氨基吡唑有趣的自偶联/环化反应，该反应能以合理的产率提供多种哒嗪核心结构。在该反应中，C(sp)-C(sp)键和N-N键在同一个反应容器中同时形成。还研究了合成化合物的光物理性质，其中一些化合物表现出具有良好量子产率的荧光性质。借助对照实验提出了一种自由基介导的反应机理。
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