Piperidine-Promoted Three-Component Condensation: Synthesis of Chromene Heterocycles and Pyrazolotriazoles
作者:Mehrnoush Kangani、Nourallah Hazeri、Afshin Yazdani-Elah-Abadi、Malek-Taher Maghsoodlou
DOI:10.1002/jccs.201700074
日期:2017.11
biologically active natural products and in synthetic chemistry and in the fields of medicinal, agrochemical, cosmetic, and pigment industries. In this work, piperidine was used as a base catalyst for the convenient synthesis of 1,4‐dihydropyrano[2,3‐c]pyrazole, 5,10‐dihydro‐4H‐benzo[g]chromene, and pyrazolo[1,2‐a] [1,2,4]triazole derivatives at ambient temperature. This methodology has several advantages
含氧杂环化合物Chromenes在具有生物活性的天然产物和合成化学以及医药,农业化学,化妆品和颜料工业领域中具有“特殊”地位。在这项工作中,哌啶被用作基础催化剂,可方便地合成1,4-二氢吡喃并[2,3- c ]吡唑,5,10-二氢-4- H-苯并[ g ]色烯和吡唑并[1, 2– a ] [1,2,4]三唑衍生物在环境温度下。该方法具有许多优点,包括使用容易获得且价格便宜的催化剂,反应时间短,产率高,后处理方便以及不需要柱色谱。