反应 #3668551
相关文献 (1)
openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US04895600
反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: To a 1 liter 5 neck flask fitted with a reflux condenser and dropping funnel is added 234.3 grams (2 mole) 70% phosphorous acid. Triethylenetetramine, 146 grams (1 mole) is then added dropwise while stirring, followed by 146 grams (4 moles) anhydrous HCl. The mixture is then heated to reflux and 162.2 grams (2 moles) 37% aqueous formaldehyde is added dropwise over 1 hour. Reflux is maintained for 2 hours after formaldehyde addition is complete, after which the reaction mixture containing the amino methylene phosphonic acid product is cooled and bottled. The mixture is then heated to reflux Reflux is maintained for 2 hours is cooled
来源 ID: ord-8b1c5df5c4e3433c8fc392a53c1c13f8