Facile Synthesis of 2-Acylthieno[2,3-<i>b</i>]quinolines via Cu-TEMPO-Catalyzed Dehydrogenation, sp<sup>2</sup>-C–H Functionalization (Nucleophilic Thiolation by S<sub>8</sub>) of 2-Haloquinolinyl Ketones
作者:Chitrala Teja、Fazlur Rahman Nawaz Khan
DOI:10.1021/acs.orglett.9b04598
日期:2020.3.6
An efficient, solvent-free synthesis of 2-acylthieno[2,3-b]quinolines is reported from 2-halo-quinolinyl ketones through Cu-TEMPO catalyzed dehydrogenation, sp2-C-H functionalization using elemental sulfur as thiol surrogate (sulfur source) and tetrabutylammonium acetate as an ionic reaction medium. The optimized reaction conditions give excellent product yields under mild reaction conditions with