Synthesis of [1,4]Thiazino[4,3-<i>a</i>]indol-10-one Derivatives through Radical Anti Aza-Michael Addition of 2′-Aminochalcones
作者:Pingshun Zhang、Linjie Yang、Wanzhi Chen、Miaochang Liu、Huayue Wu
DOI:10.1021/acs.orglett.1c02160
日期:2021.8.6
for the synthesis of [1,4]thiazino[4,3-a]indole derivatives using sodium chlorodifluoroacetate (ClCF2CO2Na) and elemental sulfur as the difluoromethylthiolating reagent system has been developed. Three-component reactions of 2′-aminochalcones, sulfur, and ClCF2CO2Na under basic conditions using TEMPO as the oxidant afforded [1,4]thiazino[4,3-a]indol-10-ones containing a difluoromethyl thioether moiety
已经开发了一种使用氯二氟乙酸钠 (ClCF 2 CO 2 Na) 和元素硫作为二氟甲基硫醇化试剂系统合成 [1,4] 噻嗪并 [4,3- a ] 吲哚衍生物的有效方法。在碱性条件下,使用 TEMPO 作为氧化剂,2'-氨基查耳酮、硫和 ClCF 2 CO 2 Na 的三组分反应得到含有二氟甲基硫醚部分的[1,4] 噻嗪基 [4,3 - a ] 吲哚-10-酮收益良好。在顺序转化过程中选择性地形成四个键,包括一个 C-N、两个 C-S 和一个 C-C 键。