Synthesis of Benzofuranones via Palladium-Catalyzed Intramolecular Alkoxycarbonylation of Alkenylphenols
作者:Vera Hirschbeck、Ivana Fleischer
DOI:10.1002/chem.201705808
日期:2018.2.26
Herein, a new catalytic system to synthesize benzofuranones is reported. A palladium‐catalyzed intramolecular alkoxycarbonylation is employed to generate 3‐substituted‐benzofuran‐2(3H)‐ones from alkenylphenols under mild reaction conditions, linked to an ex situ formation of CO from N‐formylsaccharin. The carefully chosen catalytic system enables an efficient reaction with a novel functional group
在此,报道了合成苯并呋喃酮的新的催化体系。在温和的反应条件下,钯催化的分子内烷氧基羰基化反应可从烯基酚生成3-取代的苯并呋喃-2(3 H)-酮,这与N-甲酰基糖精在异位生成CO有关。尽管起始材料具有很高的聚合趋势,但经过精心选择的催化系统仍能够以新颖的官能团耐受性进行高效反应。