Oxidative Annulations Involving DMSO and Formamide: K<sub>2</sub>S<sub>2</sub>O<sub>8</sub> Mediated Syntheses of Quinolines and Pyrimidines
作者:Santosh D. Jadhav、Anand Singh
DOI:10.1021/acs.orglett.7b02838
日期:2017.10.20
An efficient strategy toward 4-arylquinolines and 4-arylpyrimidines from readily available precursors is described. Oxidative annulation promoted by K2S2O8 involving anilines, aryl ketones, and DMSO as a methine (═CH−) equivalent leads to 4-arylquinolines via a cascade that entails generation of a sulfenium ion, subsequent C–N and C–C bond formations, and cyclization. The application of this strategy
描述了从容易获得的前体制备4-芳基喹啉和4-芳基嘧啶的有效策略。K 2 S 2 O 8促进的涉及苯胺,芳基酮和DMSO的亚甲基(═CH-)等效的氧化环化反应通过级联反应生成4-芳基喹啉,该级联反应会生成generation离子,随后的C–N和C– C键的形成和环化。还描述了该策略在乙酰苯甲酰胺甲酰胺偶联物的活化中对4-芳基嘧啶合成的应用。