DMSO as a Methine Source in TFA-Mediated One-Pot Tandem Regioselective Synthesis of 3-Substituted-1-Aryl-1<i>H</i>-Pyrazolo-[3,4-<i>b</i>]quinolines from Anilines and Pyrazolones
作者:Pushpendra Yadav、Annapurna Awasthi、Sabapathi Gokulnath、Dharmendra Kumar Tiwari
DOI:10.1021/acs.joc.0c02696
日期:2021.2.5
well as solvent making this process an environmentally benign approach. A broad range of diversely substituted aryl amines and pyrazolines are successfully employed in this reaction to access a series of pyrazolo[4,3-c]quinolones through a novel cascade mechanism. Furthermore, the application and mechanistic studies of the present methodology also demonstrated.
酸介导和DMSO参与者从容易获得的苯胺和吡唑啉酮一锅式串联合成3-取代的1-芳基-1 H-吡唑并-[3,4- b ]喹啉。这种方法能够在无过渡金属和无氧化剂的条件下区域选择性构建有价值的杂环,其中DMSO充当次甲基源以及溶剂,使该方法成为环境友好的方法。在该反应中成功地使用了各种不同取代的芳基胺和吡唑啉,以通过新颖的级联机制访问一系列吡唑并[4,3- c ]喹诺酮。此外,还证明了本方法的应用和机理研究。