通过使用草酰胺或 4-羟基吡啶甲酰胺作为配体,Cu 催化的(杂)芳基卤化物磺酰胺化反应具有出色的反应范围。对于溴化物,仅需要 2–5 mol% CuI 和草酰胺。对于氯化物,需要将催化负载增加到 10 mol% Cu 2 O 和配体。在此条件下实现了四种含氯市售药物的直接磺酰胺化和两种磺胺类药物的制备。
Mild Pd-Catalyzed <i>N</i>-Arylation of Methanesulfonamide and Related Nucleophiles: Avoiding Potentially Genotoxic Reagents and Byproducts
作者:Brandon R. Rosen、J. Craig Ruble、Thomas J. Beauchamp、Antonio Navarro
DOI:10.1021/ol200660s
日期:2011.5.20
A convenient, general, and high yielding Pd-catalyzed cross-coupling of methanesulfonamide with aryl bromides and chlorides Is reported. The use of this method eliminates concern over genotoxic impurities that can arise when an aniline is reacted with methanesulfonyl chloride. The application of this method to the synthesis of dofetilide is also reported.
ULTRA SHORT ACTING ANTI-ARRHYTHMIC AGENTS
申请人:Academic Pharmaceuticals, INC.
公开号:US20220213032A1
公开(公告)日:2022-07-07
Some aspects provide novel dofetilide derivatives and pharmaceutical compositions containing the same that are useful as pharmaceutical agents in the treatment of supraventricular and ventricular arrhythmias.