| 摘要 |
PURPOSE:To obtain a compound use as a synthetic intermediate of dyes and rubber additives, with simplified work-up, high product concentration through an economical process, by allowing a phenol to react with an amine in the presence of a hydrogen-transfer catalyst under heating. CONSTITUTION:The subject compound is obtained by reaction between phenol or its nucleus-substituted analogue and an amine or the formula (R1 is H, cyclohexyl, phenyl; R2 is H, lower alkyl) in the presence of a hydrogen-transfer catalyst such as Pd at 150-350 deg.C, preferably 200-300 deg.C. The amount of the phenol used is equimolar or more, preferably 1-5mol. per mol. or the amine, and the catalyst is 0.01-2.0wt.% based on the feedstock mixture, calculated as the metal. |
