Iodine-catalyzed sulfonylation of sulfonyl hydrazides with <i>tert</i>-amines: a green and efficient protocol for the synthesis of sulfonamides
作者:Jinyang Chen、Xiaoran Han、Lan Mei、Jinchuan Liu、Kui Du、Tuanwu Cao、Qiang Li
DOI:10.1039/c9ra07361b
日期:——
This study provides a direct, sustainable and eco-friendly method for the synthesis of various sulfonamides via the sulfonylation of sulfonyl hydrazides with tert-amines. The method utilizes sulfonyl hydrazides to oxidize and couple with tertiary amines through selective cleavage of C–N bonds. In this reaction, molecular iodine was used as the catalyst and t-butyl hydroperoxide was used as the oxidant
TBAI-catalyzed selective synthesis of sulfonamides and β-aryl sulfonyl enamines: coupling of arenesulfonyl chlorides and sodium sulfinates with <i>tert</i>-amines
A simple, practical and metal-free method has been developed for the synthesis of sulfonamides and β-arylsulfonyl enamines via the selective cleavage of C–N and C–H bonds through the iodine-catalyzed oxidation of arenesulfonyl chlorides and sodiumsulfinates with tert-amines. The method uses commercially available inexpensive catalysts and oxidants, and has a wide substrate scope and operational simplicity
Hit-to-lead optimization of a benzene sulfonamide series for potential antileishmanial agents
作者:Paul J. Koovits、Marco A. Dessoy、An Matheeussen、Louis Maes、Guy Caljon、Leonardo L. G. Ferreira、Rafael C. Chelucci、Simone Michelan-Duarte、Adriano D. Andricopulo、Simon Campbell、Jadel M. Kratz、Charles E. Mowbray、Luiz C. Dias
DOI:10.1039/d0md00165a
日期:——
A series of benzene sulphonamides with good potency and selectivity against Leishmania spp. intracellular amastigotes was identified by high-throughput screening. Approximately 200 compounds were synthesized as part of a hit-to-lead optimization program. The potency of the series appears to be strongly dependent on lipophilicity, making the identification of suitable orally available candidates challenging