| 摘要 |
PURPOSE:To obtain the titled compound useful as a curing agent for epoxy resin, etc., selectively in high yield by the use of an inexpensive reducing agent under a mild condition, by reducing nitrobenzylamine as a raw material with an alkaline metallic salt of sulfide, etc. CONSTITUTION:Nitrobenzylamine shown by the formula (NO2 is in o-, m- or p-position) is reduced with an alkali metallic salt of sulfide such as Na2S, K2S, etc., or ammonium salt of sulfide such as (NH4)2S, etc., in water or a mixture of water and an organic solvent at 20-150 deg.C, and the solvent is directly recovered by vacuum distillation, to give the aimed compound. EFFECT:Since a reaction is carried out under a basic condition, an operation to isolate an acid salt of the aimed substance is not required, the aimed high- purity compound is obtained only by recovery of a solvent and liquid separation or distillation, a specific reactor is not required, a common reactor is used, so this process is industrially preferable. USE:A raw material for polyamide, polyimide, etc., or a raw material for an intermediate for agricultural chemicals and drugs.
|
