Facile synthesis of fused polyheterocycles containing trifluromethylated benzo[6,7]chromeno[2,3-c]pyrazoles via one-pot two-step MCRs
作者:Wenwen Duan、Zeyu Li、Fanhui Chen、Min Zhang、Hongmei Deng、Liping Song
DOI:10.1016/j.jfluchem.2020.109525
日期:2020.7
polyheterocyclic products trifluoromethylated benzo[6,7]chromeno[2,3-c]pyrazole-5,10-dione derivatives. Furthermore, an efficient, straightforward protocol has been developed for the synthesis of trifluoromethylated benzo[6,7]chromeno[2,3-c]pyrazole-5,10-dione derivatives at medium yields via one-pot, two-step, three-component reactions. Meanwhile, the structures of typical products were further confirmed by XRD-analysis
通过NH 4 OAc催化的2-羟基-1,4-萘醌,芳香醛和三元醇的一锅,三组分反应,在乙腈溶剂中高收率合成了一系列非环状产物:三氟甲基吡唑啉酮系链的三取代甲烷衍生物。1-芳基-3-三氟甲基-5-吡唑酮。用脱水剂SOCl 2 /吡啶在乙腈中处理三氟甲基吡唑啉酮连接的三取代甲烷衍生物,得到相应的环合稠合多杂环产物,三氟甲基化苯并[6,7] chromeno [2,3 - c ]吡唑-5,10-二酮衍生物。此外,已经开发了一种有效,简单的方法来合成三氟甲基化的苯并[6,7]铬[2,3- c一锅,两步,三组分反应以中等收率得到]吡唑-5,10-二酮衍生物。同时,通过XRD分析进一步证实了典型产品的结构。