A Convenient Preparation of Heteroaryl Sulfonamides and Sulfonyl Fluorides from Heteroaryl Thiols
作者:Stephen W. Wright、Kelly N. Hallstrom
DOI:10.1021/jo052164+
日期:2006.2.1
thiols may be oxidized to the sulfonyl chloride at low temperature (−25 °C) by using 3.3 equiv of aqueous sodium hypochlorite. The reaction is rapid, avoids the use of chlorine gas, and succeeds with substrates that have previously been found to afford little or none of the sulfonamide product with other procedures. The method allows the preparation of the sulfonylfluorides, which are stable enough to
Heteroaryl sulfonamide synthesis: scope and limitations
作者:Roman O. Iakovenko、Daniel Chrenko、Jozef Kristek、Eline Desmedt、František Zálešák、Freija De Vleeschouwer、Jiří Pospíšil
DOI:10.1039/d2ob00345g
日期:——
Heteroaryl sulfonamides are important structural motifs in the medicinal and agrochemical industries. However, their synthesis often relies on the use of heteroaryl sulfonyl chlorides, which are unstable and toxic reagents. Herein, we report a protocol that allows direct oxidative coupling of heteroaryl thiols and primary amines, readily available and inexpensive commodity chemicals. The transformation