ring-closure procedure to prepare a range of diverse heterocycles has been developed. In this transformation, a variety of substituted (thio)salicylamides and thiosalicylic acids occured double 1, 4-additions reaction with propiolate derivatives in the presence of inorganic base (K3PO4), as a result, benzothiazinones, benzoxazinones and benzoxathiinones were prepared in good to excellent yields respectively
已经开发了一种简单实用的闭环方法来制备一系列不同的杂环。在该转化过程中,在
无机碱(K3PO4)存在下,各种取代的(
硫代)
水杨酰胺和
硫代水杨酸与
丙酸酯衍
生物发生了双1、4加成反应,结果制备了苯并
噻嗪酮,苯并恶嗪酮和
苯并噻吩并酮即使以克为单位,也具有出色的产量。另外,还成功地进行了向更复杂结构和奥昔康药物类似物的进一步转化。