Cascade 1,3-dipolar Cycloaddition/SO2 extrusion approach for the rapid synthesis of tetraaryl-substituted pyrazoles with Aggregation Induced Emission characteristics
作者:Guorui Cao、Xiang Liu、Long Wang、Yanshun Li、Dawei Teng
DOI:10.1016/j.tet.2020.131568
日期:2020.10
A highly efficient strategy was developed for the straightforward synthesis of tetraaryl-substituted pyrazoles. The cascade process consists of a regioselective 1,3-dipolar cycloaddition of benzosultam-3-ylidenes with nitrile imines and a subsequent elimination of SO2. The title compounds exhibit high fluorescence quantum yields and Aggregation Induced Emission (AIE) characteristics. (C) 2020 Elsevier Ltd. All rights reserved.