3,4-Diaminopyridine derivatives corresponding to a specified formula are produced by (a) reacting 3,4-diaminopyridine with a 1,2-dicarbonyl compound to form a diimine; (b) reducing the diimine to a diamine; and (c) replacing at least a hydrogen atom on nitrogen at position 4 of the pyridine ring. These compounds are useful as catalysts.
根据指定的公式,通过以下步骤制备与3,4-二
氨基
吡啶衍生物:(a)将3,4-二
氨基吡啶与1,2-二羰基化合物反应形成二
亚胺;(b)将二
亚胺还原为二胺;(c)替换
吡啶环中4号氮原子上至少一个氢原子。这些化合物可用作催化剂。