scope is performed to establish a general, synthetically useful protocol for the synthesis of novel trifluoromethylated 1,3-dihydrobenzo[c]isothiazole 2,2-dioxides in moderate to high yields. This method is also successfully applied for the synthesis of difluoromethylated and trifluoroethylated 1,3-dihydrobenzo[c]isothiazole 2,2-dioxides in good to excellent yields.
                                    报道了在蓝光 LED 下使用市售的 CF3SO2Cl 作为
三氟甲基自由基源对 N-芳基
乙烯基磺酰胺进行光催化和高效三
氟甲基化。该反应在温和条件下通过自由基环化进行。对底物范围进行了调查,以建立一个通用的、合成有用的协议,用于以中等至高产率合成新型三
氟甲基化 1,3-二氢苯并 [c] 
异噻唑 2,2-二氧化物。该方法还成功地用于合成二
氟甲基化和三
氟乙基化 1,3-二氢苯并[c]
异噻唑 2,2-二氧化物,收率良好。