isothiocyanate ( 2 ) in refluxing acetone, was reacted with a series of halopgenated reagents to give S-alkyl derivatives 4a-g . Upon treatment of compounds 4a-c with sodium ethoxide were cyclized into thienopyrimidine 10a-c . Pyrimidinethione 3 was reacted with hydrazine hydrate to give hydroxypyrazolopyrimidine derivative 6 . The later compound was obtained by heating compound 4a with hydrazine hydrate under
5-Ethoxycarbonyl-4-methyl-2-phenylpyrimidin-6(1H)-thione (3) 是由 g-
氨基巴豆酸乙酯 1 与异
硫氰酸苯甲酰 (2) 在回流
丙酮中反应制备的,与一系列卤化试剂得到S-烷基衍
生物4a-g。用
乙醇钠处理化合物 4a-c 后,环化成
噻吩并
嘧啶 10a-c。
嘧啶硫酮 3 与
水合
肼反应得到羟基
吡唑并
嘧啶衍
生物 6 。通过在纯条件下将化合物 4a 与
水合
肼加热获得后一种化合物,但是当使用
水合
肼在
乙醇中进行反应时,会产生相应的碳酰
肼 5。