申请人:Ube Industries, Ltd.
公开号:EP1975155A1
公开(公告)日:2008-10-01
Disclosed is a process for production of a lactam (particularly, an industrially useful lactam, e.g., laurolactam) with high selectivity, comprising hydrogenating a cyclic dicarboxylic acid imide having a large of ring members (particularly, a 8-membered or more cyclic dicarboxylic acid imide) to produce a corresponding. The process is characterized by hydrogenating a 8-membered or more cyclic dicarboxylic acid imide in the presence of ruthenium of platinum. In the process, the ruthenium or platinum may be supported on activated charcoal and an alcohol may be used as a reaction solvent.
本发明公开了一种具有高选择性的内酰胺(特别是工业上有用的内酰胺,如月桂内酰胺)的生产工艺,包括氢化具有大量环成员的环状二羧酸亚胺(特别是 8 元或 8 元以上的环状二羧酸亚胺)以生产相应的内酰胺。该工艺的特点是在铂的钌存在下氢化 8 元或 8 元以上环状二羧酸亚胺。在该工艺中,钌或铂可被支撑在活性炭上,醇可用作反应溶剂。