作者:Jih Ru Hwu、Animesh Roy、Avijit Panja、Wen-Chieh Huang、Yu-Chen Hu、Kui-Thong Tan、Chun-Cheng Lin、Kuo-Chu Hwang、Ming-Hua Hsu、Shwu-Chen Tsay
DOI:10.1021/acs.joc.0c01134
日期:2020.8.7
A three-component annulation reaction was developed for the synthesis of pyrroles, a class of compounds with various properties valuable to biomedical and polymer industries. Treatment of α-silylaryl triflates, Schiff bases, and alkynes generated polysubstituted pyrroles in good yields (61–86%) with regioselectivity. This domino reaction involved completion of five sequential steps in a single flask
开发了三组分环合反应用于吡咯的合成,吡咯是一类具有各种特性的化合物,对生物医学和聚合物工业具有重要意义。α-甲硅烷基芳基三氟甲磺酸酯,席夫碱和炔烃的处理产生了具有高选择性(61-86%)且具有区域选择性的多取代吡咯。该多米诺反应涉及在单个烧瓶中完成五个连续步骤,包括通过1,2-消除形成芳烃,通过1,2-加成,席夫碱将烷基烷基化,通过1,2-加成,1,4-分子内质子转移,Hüisgen1,3-偶极环加成和脱氢芳构化。然后成功地将其用作合成天然产物lamellarin R的关键步骤。这一新反应代表了化学材料生产的高效,可持续过程。