A Regioselective S<sub>N</sub>Ar Reaction of Poly-halo-quinoline-3-carboxylates with Phenol, Thiophenol, or <i>N</i>-Methylaniline
作者:Shikui Zhao、Weicheng Zhou
DOI:10.1080/00397910903531656
日期:2010.12.21
By SNAr reaction, poly-halo-quinoline-3-carboxylates such as ethyl 4-chloro-2-cyclopropyl-6,7-difluoro-quinoline-3-carboxylate and ethyl 4-chloro-2-cyclopropyl-5,6-difluoro-quinoline-3-carboxylate were transformed into the 4-phenoxy or 4-phenylthio or 4-(N-methyl)phenylamino-6,7 (or 5,6)-difluoro-quinoline-3-carboxylates or the 4,7-disubstituted, 4,5-disubstituted, 4,6,7-trisubstituted and 4,5,6-trisubstituted
通过SNAr反应,聚卤-喹啉-3-羧酸酯如4-氯-2-环丙基-6,7-二氟-喹啉-3-羧酸乙酯和4-氯-2-环丙基-5,6-二氟乙酯-quinoline-3-carboxylates 被转化为 4-phenoxy 或 4-phenylthio 或 4-(N-methyl)phenylamino-6,7 (or 5,6)-difluoro-quinoline-3-carboxylates 或 4,7-二取代、4,5-二取代、4,6,7-三取代和4,5,6-三取代产物在温和条件下以中等至极好的产率获得。观察到高度区域选择性的单或多取代。