Regioselective and oxidant-free sulfinylation of indoles and pyrroles with sulfinamides
作者:Yuan-Zhao Ji、Jin-Yu Zhang、Hui-Jing Li、Chunguang Han、Yi-Kun Yang、Yan-Chao Wu
DOI:10.1039/c9ob00526a
日期:——
time-controlled highly selective C3- or C2-sulfinylation of pyrroles with sulfinamides is reported for the first time. The sulfinylation of indoles with sulfinamides using this protocol is oxidant-free and can be performed under obviously more feasible conditions (1.2 equiv. of indoles, 10 min) in comparison with the precedent procedure (3–20 equiv. of indoles, 16–18 h, ammonium persulfate as oxidant, hv). A
首次报道了用亚磺酰胺意外地控制时间的高选择性吡咯的C3-或C2-亚磺酰基化。与先前的程序(3–20当量的吲哚,16–18)相比,使用该方案将亚吲哚的亚磺酰基进行亚磺酰胺化是无氧化剂的,并且可以在明显更可行的条件下进行(1.2当量的吲哚,10分钟)。 h,过硫酸铵作为氧化剂,hv)。可以容忍各种官能团,并且以中等至极好的收率获得了各种C2-硫代吲哚和C2 / 3-硫代吡咯。