Transformations of N-arylpropiolamides to indoline-2,3-diones and acids via C≡C triple bond oxidative cleavage and C(sp2)–H functionalization
作者:Ming-Bo Zhou、Yang Li、Xuan-Hui Ouyang、Jin-Heng Li
DOI:10.1007/s11426-019-9633-x
日期:2020.2
A new palladium-catalyzed oxidative conversion of N-arylpropiolamides and H2O to various indoline-2,3-diones and acids through the C≡C triple bond cleavage and C(sp2)–H functionalization is described, which is promoted by a cooperative action of catalytic CuBr2, 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) and O2. The method provides a practical tool for transformations of alkynes by means of a C–H
描述了通过C tripleC三键裂解和C(sp 2)-H官能化作用,将新的钯催化的N-芳基丙酰胺和H 2 O氧化转化为各种二氢吲哚-2,3-二酮和酸的过程,这一点受到促进。催化的CuBr的协作动作2,2,2,6,6-四甲基-1-哌啶氧(TEMPO)和O 2。该方法通过C–H官能化策略为炔烃的转化提供了实用的工具,该方法可在单个反应中形成一个C–C键和多个C–O键,并具有高的底物相容性和出色的官能团耐受性。