| 摘要 |
PURPOSE:To obtain the title compd. which is a colorless crystal and has a high purity in a high yield without causing environmental pollution, by subjecting an arom. aldehyde and an arom. diamine to a dehydration-condensation reaction in the presence of optionally, a small amount of a reaction accelerator under high pressure. CONSTITUTION:An arom. aldehyde (A) such as benzaldehyde or a dialkylamino-, alkoxy-, alkyl-, NO2 or halogen-substd. benzaldehyde and an arom. amine (B) such as N,N-dialkylaniline, N-alkylaniline, aniline or a substitution compd. thereof are subjected to a dehydration-condensation reaction in the presence of a optionally, 0.1-50mol.% (based on the amount of the component A) of a reaction accelerator such as protonic acid, Lewis acid, etc. under a high pressure of 1,000-9,000kg/cm<2>.
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