| 摘要 |
PURPOSE:To obtain the titled compound useful as an intermediate raw material for organic syntheses, under mild condition in high yield, suppressing the deterioration of catalyst, by using a cyclic imide having high thermal stability as a raw material and hydrogenating the compound in gaseous phase in the presence of a specific catalyst containing copper as essential component. CONSTITUTION:A cyclic dicarboxylic acid imide or its precursor is used as a raw material and is subjected to vapor-phase hydrogenation at 200-300 deg.C under normal or slightly positive pressure in the presence of a catalyst containing copper as an essential component. The reaction is carried out by carrying the evaporated raw material compound directly with hydrogen gas stream and introducing the compound into a catalyst layer. The cyclic dicarboxylic acid imide is preferably succinimide, maleimide, etc. The catalyst is preferably those composed mainly of a compound oxide consisting of copper and chromium and/or zinc and the content of copper in the catalyst is preferably about 5-85%. |
