A process for the preparation of a highly selective amount of secondary monomethylalkyl amine, said process comprising reacting, at elevated temperature and pressure, a hexahydrotriazine compound in the liquid state with hydrogen in the presence of a catalyst material having at least one catalytically active metal, said hexahydrotriazine compound having the formula
wherein R₁, R₂, and R₃ are, independently, straight or branched, saturated or unsaturated, linear or cyclic hydrocarbon groups or straight or branched, saturated or unsaturated, linear or cyclic hydrocarbon groups wherein one or more CH₂ groups are replaced by an oxygen atom or a tertiary amine group, provided that any unsaturated group is separated from nitrogen in the hexahydrotriazine ring by at least one carbon atom, any said oxygen atom is enclosed by two carbon groups, and any said oxygen atoms and any said amine groups are separated from other oxygen atoms and other amine groups and from said nitrogen in the hexahydrotriazine ring by at least two carbon atoms.
一种制备高选择性仲单甲基烷基胺的工艺,该工艺包括在高温高压下,使液态的六氢三嗪化合物与
氢气在含有至少一种催化活性
金属的催化剂材料存在下发生反应,所述六氢三嗪化合物的
化学式为
其中 R₁、R₂ 和 R₃ 独立为直链或支链、饱和或不饱和、线性或环状烃基,或直链或支链、饱和或不饱和、线性或环状烃基,其中一个或多个 CH₂ 基团被氧原子或叔胺基团取代、条件是任何不饱和基团与六氢
三嗪环中的氮至少相隔一个碳原子,任何上述氧原子被两个碳基团包围,任何上述氧原子和任何上述胺基团与其他氧原子和其他胺基团以及与六氢
三嗪环中的氮至少相隔两个碳原子。