Selective cleavage of the N-propargyl group from sulfonamides and amides under ruthenium catalysis
作者:Jingjing Wang、Feng Li、Wenlong Pei、Mixue Yang、Yidan Wu、Danyang Ma、Furong Zhang、Jianhui Wang
DOI:10.1016/j.tetlet.2018.03.046
日期:2018.5
The selective cleavage of the N-propargyl group from sulfonamides and amides under ruthenium catalysis is described. The reaction tolerates a broad range of functional groups, and the desired products were obtained in 10–95% yield.
Highly efficient synthesis of functionalized dihydronaphthalenes, tetrahydronaphthalenes, and tetrahydroisoquinolines by iron-catalyzed intramolecular Friedel–Crafts reaction of aryl-containing propargylic alcohols
An efficient, convenient, and one-pot procedure for the synthesis of a series of new dihydro- and tetrahydronaphthalenes as well as tetrahydroisoquinolines has been established through Lewis acid-catalyzed intramolecular Friedel–Crafts reaction of aryl-substituted propargylic alcohols.
3‒triazole-based sulfonamides via copper (I)‒catalyzed azide‒alkyne [3 + 2] cycloaddition reaction was reported. The desired products were characterized by CHN analysis, FT-IR, 1H and 13C NMR, ESI-MS spectroscopy, single crystal X-ray diffraction and density functional theory (DFT) geometry optimization and molecular orbital calculations. Mild and green reaction conditions, atom-economic and high yields