反应详情

To a 500 ml three neck flask fitted with a reflux condenser and dropping funnel is added 131.2 grams (1.12 moles) 70% phosphorous acid and 207.2 grams (2.1 moles) 37% hydrochloric acid. Aminoethyl ethanolamine, 42.1 grams (0.40 mole) is then added dropwise while stirring. The mixture is then heated to reflux and 97.3 grams (1.2 moles) 37% aqueous formaldehyde is added dropwise during 1 hour. Reflux is continued for 2 hours after completion of the formaldehyde addition. The mixture is then cooled and bottled.

1. temperatureThe mixture is then heated
2. temperatureto reflux
3. temperatureReflux
4. temperatureThe mixture is then cooled