Formaldehyde → N-(Carboxymethyl)-N-(phosphonomethyl)glycine

HRID 651296Notes

Reaction equation

HRID 651296 reaction equation
O.[C:2]([N:5]([CH2:10][C:11]([OH:13])=[O:12])[CH2:6][C:7]([OH:9])=[O:8])(=O)C.[P:14]([OH:17])([OH:16])[OH:15].S(=O)(=O)(O)O.C=O>O>[P:14]([CH2:2][N:5]([CH2:10][C:11]([OH:13])=[O:12])[CH2:6][C:7]([OH:9])=[O:8])([OH:17])([OH:16])=[O:15]

Participants

6

Reactant 4

HCID 712FormaldehydeHCID 1118Sulfuric AcidHCID 107909Phosphorous acidHCID 86755940HCID 86755940, compound

Product 1

HCID 80092N-(Carboxymethyl)-N-(phosphonomethyl)glycineYield 62.3%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
110 °C

Procedure

Cycle 1: A reactor was charged with N-acetyliminodiacetic acid monohydrate (17.0 g), water (5 g), phosphorous acid (11.39 g) and 98% sulfuric acid (15 g). The mixture was heated to 110° C. and 42.2% formaldehyde (5.6 mL) was added drop wise over a one hour period. After another 1¾ hour at 110° C. the mixture was cooled to 25° C. The mixture was filtered and the solid was washed with water to give 12.46 g of N-(phosphonomethyl)iminodiacetic acid.

Workup

  1. temperatureAfter another 1¾ hour at 110° C. the mixture was cooled to 25° C
  2. filtrationThe mixture was filtered
  3. washthe solid was washed with water

Sources & evidence

ORD record
ord-87a47f007aea450281672abb42e43442
Source dataset
uspto-grants-2001_08
Patent number
US06278017B1

Reaction notes

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