3-Dimethoxymethyl-2-(N-cyanoimino)thiazolidine 1e reacts with secondary amines to afford 2,4-diamino-s-triazines 4 unexpectedly, while the triazine 5 bearing different amino groups at 2 and 4 positions is selectively obtained by the reaction with a mixture of two kinds of amines.
3-二甲氧基甲基-2-(N-
氰基亚
氨基)
噻唑啉 1e 与仲胺反应意外地得到2,4-二
氨基-s-三嗪 4,而通过与两种不同胺的混合物反应可以选择性地得到在2位和4位带有不同
氨基的三嗪 5。