Synthesis of Substituted Benzo[<i>b</i>]thiophenes via Base-Promoted Domino Condensation–Intramolecular C–S Bond Formation
作者:Yogendra Kumar、Hiriyakkanavar Ila
DOI:10.1021/acs.orglett.1c00085
日期:2021.3.5
A novel synthesis of 2,3-substituted benzothiophenes is reported, involving a tandem base-mediated condensation of o-iodoarylacetonitriles/acetates/ketones with (hetero)aryldithioesters and an intramolecular C–S bond formation. The reaction affords diversely substituted benzothiophenes and heterofused thiophenes in excellent yields.
Novel Route to 2,3-Substituted Benzo[<i>b</i>]thiophenes via Intramolecular Radical Cyclization
作者:Prabal P. Singh、A. K. Yadav、H. Ila、H. Junjappa
DOI:10.1021/jo900615p
日期:2009.8.7
A novel route to 2,3-substituted benzo[b]thiophenes by intramolecular radical cyclization of polarized ketene dithioacetals derived from o-bromoarylacetonitriles or the corresponding 3-(methylthio)-3-alkyl/aryl/heteroaryl analogues has been reported.
已经报道了通过衍生自邻-溴芳基乙腈或相应的3-(甲硫基)-3-烷基/芳基/杂芳基类似物的极化的烯酮二硫缩醛的分子内自由基环化形成2,3-取代的苯并[ b ]噻吩的新途径。