Domino Synthesis of 2-Substituted Benzothiazoles by Base-Promoted Intramolecular C–S Bond Formation
作者:Yogendra Kumar、Hiriyakkanavar Ila
DOI:10.1021/acs.orglett.9b02855
日期:2019.10.4
developed, involving base-promoted one-pot addition of active methylene compounds to o-iodoarylisothioacyanates and subsequent intramolecular C-S bond formation of the resulting thioamidate anion. The reaction proceeds at room temperature within 1-3 h, affording diversely substituted benzothiazoles in high yields. A possible radical intermediate pathway, via an SRN1 mechanism, has been proposed for intramolecular
已开发出一种新的,无过渡金属的2-取代的苯并噻唑多米诺骨合成方法,该方法包括将一锅活性亚甲基化合物碱促一锅加成到碘代异芳基异硫氰酸酯上,然后在分子内形成硫代氨基甲酸酯阴离子。该反应在室温下1-3小时内进行,以高收率提供了各种取代的苯并噻唑。已经提出了通过SRN1机制的可能的自由基中间途径用于分子内CS键形成。