The method of pyrimidine ring fusion at the [c] side of benzothiazines based on the reaction of their chloroaldehyde derivatives with amidines is described. Formation of the structural isomers of reaction products was investigated, and regioselectivity of heterocyclization reactions was shown. A number of novel pyrimidobenzothiazines were synthesized. J. Heterocyclic Chem., 2010.
描述了基于苯并噻嗪的氯醛衍生物与am的反应在嘧啶环的[ c ]侧进行嘧啶环稠合的方法。研究了反应产物的结构异构体的形成,并显示了杂环化反应的区域选择性。合成了许多新颖的嘧啶并苯并噻嗪。J.杂环化学.2010。