| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject compound without by-producing hydrogen sulfide, easy in the recovery of catalysis, and not causing the corrosion of a device by reacting a diamine compound with a nitrile compound in the presence of a metal oxide and a carboxylic acid as the catalysts. SOLUTION: A method for producing a 2-imidazoline compound comprises reacting (A) a 1,2-diamine compound, preferably a 1,3-diamine compound of the formula: H2 HCHR<1> CHR<2> NHR<3> (R<1> to R<3> are independently H, an aliphatic group, an aromatic-aliphatic group, an aromatic group), with (B) a nitrile compound, preferably a nitrile compound of formula: R<4> CH (R<4> is the same as R<1> to R<3> ) in the presence of (C) a metal oxide (preferably zinc oxide, niobium oxide, chromium oxide, manganese oxide) and a carboxylic acid. For example, ethylene as the component A is reacted with acetonitrile as the component B in the presence of active zinc powder and acetic acid as the component C to obtain 2-methylimidazole. The active zinc powder is not dissolved in the acetic acid and can be recovered. |
