6‐Methyl‐2‐methylthio‐4‐oxopyrimidin‐3(4H)‐yl)acetohydrazide on heating in benzylamine undergo cyclization to 8‐methyl‐2H‐pyrimido[2,1‐c][1,2,4]triazine‐3,6(1H, 4H)‐dione, which under treatment with bromine in glacial acetic acid was converted to 7‐bromo substituted derivative and at reflux with Lawesson's reagent yielded 3‐thioxo compound. The latter reacted with primary and secondary amines to give
在
苄胺中加热时,将6-甲基-2-甲
硫基-4-氧
嘧啶丁-3(4 H)-基)乙酰
肼环化为8-甲基-2 H-
嘧啶基[ 2,1- c ] [1,2,4]将三嗪-3,6(1 H,4 H)-二酮(在
冰醋酸中用
溴处理)转化为7-
溴取代的衍
生物,并与Lawesson试剂回流后生成3-thioxo化合物。后者与
伯胺和仲胺反应生成3-
氨基取代的
嘧啶三嗪,并在烷基化时生成相应的S-烷基衍
生物。