Copper-Catalyzed Sulfonylation/Cyclization of Pent-4-ynamides toward Sulfonyl-Functionalized Pyrrol-2-ones
作者:Danhua Wu、Menglu Jiang、Juan-Juan Wang、Wei Yu
DOI:10.1021/acs.orglett.3c00441
日期:2023.3.31
A domino sulfonylation/intramolecular C–N coupling/dehydrogenation reaction was realized between pent-4-ynamides and sulfonyl chlorides by catalysis of Cu(acac)2 and 2,2′-bis(diphenylphosphanyl)-1,1′-binaphthalene. The reaction provides a convenient approach to sulfonyl-functionalizedpyrrol-2-ones. This method can also be applied to the synthesis of 3-alkylidene isoindolinones from 2-ethynyl-benzamides