An efficient room-temperature method for the synthesis of 1-sulfonyl-1,2,3-triazoles from in situgeneratedcopper(I) acetylides and sulfonyl azides is described. The copper(I) thiophene-2-carboxylate (CuTC) catalyst produces the title compounds under both nonbasic anhydrous and aqueous conditions in good yields.
Catalyst-Free Synthesis of Polycyclic Spiroindolines by Cascade Reaction of 3-(2-Isocyanoethyl)indoles with 1-Sulfonyl-1,2,3-triazoles
作者:Cong Chen、Jing Chen、Han Wang、Ze-Feng Xu、Shengguo Duan、Chuan-Ying Li
DOI:10.1021/acs.joc.3c00800
日期:2023.7.7
A catalyst-free cascade reaction of 3-(2-isocyanoethyl)indoles and 1-sulfonyl-1,2,3-triazoles was realized. This dearomative spirocyclization provided an efficient protocol to synthesize a series of polycyclic indolines bearing spiro-α-carboline in moderate to high yields in one step under thermal reaction conditions.