作者:Yinxiang Jian、Peng Liang、Xiaoyan Li、Huawu Shao、Xiaofeng Ma
DOI:10.1039/d2ob01951e
日期:——
combination of phenyliodine bis(trifluoroacetate) (PIFA) with n-Bu4NCl·H2O (TBAC) was exploited. Through controlling the amount of PIFA and TBAC from one to three equivalents, 3-chloro-indoles, 3-chloro-2-oxindoles, and 3,3-dichloro-2-oxindoles were obtained, respectively, in satisfactory to excellent yields. The advantages of the protocol include mild conditions, facile process with short reaction time, high
在此,通过苯碘双(三氟乙酸酯)(PIFA)与n -Bu 4 NCl·H 2的组合,一种高效且高度官能团相容的吲哚可控转化程序O (TBAC) 被利用。通过将PIFA和TBAC的用量从1当量控制到3当量,分别获得了3-氯-吲哚、3-氯-2-羟吲哚和3,3-二氯-2-羟吲哚,收率令人满意。该协议的优点包括条件温和、过程简单、反应时间短、产量高、功能组耐受性令人满意,以及使用空气和水分稳定的促进剂 PIFA。机理研究表明,该反应可能通过卤离子物种介导的卤化-消除-卤化逐步过程进行。