| 摘要 |
PURPOSE:To obtain the titled compound useful as a raw material for agricultural chemicals, drugs, and transparent nylon in high yield in high selectivity, by hydrogenating dimethyladiponitrile in a lower alkyl alcohol solvent by the use of a Raney catalyst and a basic cocatalyst. CONSTITUTION:In >=10wt% solution of a Raney nickel catalyst obtained by developing a Raney nickel alloy in an aqueous solution of NaOH in a lower alcohol such as preferably ethyl alcohol, dimethyladiponitrile is hydrogenated in the presence of a basic cocatalyst of an alkali metal hydroxide such as NaOH, etc. at 50-160 deg.C at >=10kg/cm<2>G H2 partial pressure for >=1hr, the catalyst is separated from the reaction solution by a filter, and purified by distillation, etc., to give high-purity dimethylhexamethylenediamine. |
