| 摘要 |
PURPOSE:To produce the subject compounds by an one step reaction in good yields by treating an amine compound in the presence of a crystalline aluminosilicate catalyst calcined under an air atmosphere. CONSTITUTION:An amine compound having a group of the formula (R<1>-R<4> are H, 1-3C alkyl) is treated at 250-450 deg.C in the presence of a crystalline aluminosilicate catalyst which has been calcined at 610-950 deg.C under an air atmosphere for 1hr or longer and which has a silica/alumina molar ratio of >=12/1, preferably (40-5000)/1 to produce the objective compound. The amine having the group of the formula includes N-(2-aminoethyl) piperazine. Since the catalyst has its catalytic activity for a long time and can be repeatedly used by applying regeneration treatments to the catalyst, the production cost of the objective compound can be lowered. |
