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 sulfonyl fluorides, which are stable enough to
杂芳族硫醇可通过使用3.3当量的次氯酸钠水溶液在低温(−25°C)下氧化为磺酰氯。该反应是快速的,避免了使用氯气,并且成功地使用了以前发现的底物,该底物在其他方法下几乎没有或根本没有提供磺酰胺产物。该方法允许制备磺酰氟,该磺酰氟足够稳定以被纯化和储存,从而使其成为潜在的有用的单体,可用于平行化学研究中。