Treatment of the readily available di-N-oxide- of 2-thiopyridine disulfide 6 with tributylphosphine in the presence of a carboxylic acid provides a convenient and high yielding synthesis of the acyl derivatives 2 of N-hydroxy-2-thio-pyridone. Application of this procedure to the acids 17 and 18 gave, after irradiation in the presence of t-butylthiol, the desired decarboxylated derivatives in high (>90%)
容易获得的2-
硫代
吡啶二
硫化物的二-N-氧化物的治疗6与
三丁基膦在
羧酸的存在提供的酰基衍
生物的方便和高产合成2 N-羟基-2-
硫代
吡啶酮。在
叔丁基硫醇存在下进行辐射后,将该方法应用于酸17和18,以高产率(> 90%)得到所需的脱羧衍
生物。