Formaldehyde → Diethyl phosphonomethanol

HRID 1639400Notes

Reaction equation

HRID 1639400 reaction equation
[P:1]([O-:8])([O:5][CH2:6][CH3:7])[O:2][CH2:3][CH3:4].[CH2:9]=[O:10]>C(N(CC)CC)C>[OH:10][CH2:9][P:1](=[O:8])([O:5][CH2:6][CH3:7])[O:2][CH2:3][CH3:4]

Participants

4

Reactant 2

HCID 712FormaldehydeHCID 3780918Diethylphosphite

Product 1

HCID 76513Diethyl phosphonomethanolYield 60%

Reagents, catalysts & solvents 1

HCID 8471TriethylamineSolvent2×

Procedure

To a 2 liter round bottomed flask fitted with a nitrogen inlet were added 500 grams (3.6 mole) of diethyl phosphite (Aldrich), 120 grams (3.8 mole) of paraformaldehyde (Baker) and approximately 6 milliliters of triethylamine. The mixture was stirred overnight at room temperature but no visible reaction had occurred so approximately 10 milliliters more of triethylamine was added and the mixture was slowly warmed to 90° C. The solution was heated for approximately an additional hour, filtered hot and distilled. 320 grams of a liquid product corresponding to a 60% yield was obtained.

Workup

  1. customTo a 2 liter round bottomed flask fitted with a nitrogen inlet
  2. customno visible reaction
  3. additionwas added
  4. temperaturethe mixture was slowly warmed to 90° C
  5. temperatureThe solution was heated for approximately an additional hour
  6. filtrationfiltered hot
  7. distillationdistilled

Sources & evidence

ORD record
ord-9ca7709abd554512bae186097dc47ac3
Source dataset
uspto-grants-1989_11
Patent number
US04883891

Reaction notes

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