Synthesis of Spirofurooxindoles via Phenyliodine(III) Bis(trifluoroacetate) (PIFA)-Mediated Cascade Oxidative C−O and C−C Bond Formation
作者:Desong Sun、Xiaoyuan Zhao、Bobo Zhang、Ying Cong、Xintong Wan、Mingmai Bao、Xue Zhao、Bing Li、Daisy Zhang-Negrerie、Yunfei Du
DOI:10.1002/adsc.201701635
日期:2018.4.17
Upon treatment with solely a hypervalent iodine reagent of phenyliodine(III) bis(trifluoroacetate) (PIFA), 3‐(2‐hydroxyphenyl)‐3‐oxo‐N‐phenyl propanamides and a series of its derivatives were conveniently converted to a class of undocumented spirofurooxindoles under mild conditions. Control experiments provided evidence that this spirocyclization process encompassed a cascade oxidative reactions involving
仅使用苯基碘(III)双(三氟乙酸盐)(PIFA)的高价碘试剂处理后,即可将3-(2-羟基苯基)-3-氧代-N-苯基丙酰胺及其一系列衍生物方便地转换为一类在温和条件下未记录的螺呋喃氧吲哚。对照实验提供的证据表明,该螺环化过程包括级联氧化反应,该级联氧化反应涉及先于C-C键形成C-O键。