Dimethyl methylphosphonate → Antimony Pentachloride Dimethylmethylphosphonate

HRID 354618

Reaction equation

HRID 354618 reaction equation
[Sb:1]([Cl:6])([Cl:5])([Cl:4])([Cl:3])[Cl:2].[CH3:7][O:8][P:9]([CH3:13])(=[O:12])[O:10][CH3:11]>C(Cl)Cl>[Sb:1]([Cl:6])([Cl:5])([Cl:4])([Cl:3])[Cl:2].[CH3:7][O:8][P:9]([CH3:13])(=[O:12])[O:10][CH3:11]

Participants

4

Reactant 2

HCID 12958Dimethyl methylphosphonateHCID 24294Antimony pentachloride

Product 1

HCID 131712430Antimony Pentachloride Dimethylmethylphosphonate

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent3×

Procedure

In a round bottom flask, under a nitrogen atmosphere, 7.61 g (0.0254 M) of antimony pentachloride was dissolved in 75 ml of methylene chloride. To this yellow solution was added dropwise with stirring a solution of 3.16 g (0.0254 M) of dimethylmethylphosphonate in 20 ml of methylene chloride. The addition was accomplished at a rate such that the exotherm did not become excessive, the temperature being kept below the reflux temperature of methylene chloride (cooling should not be required). By the end of the addition, the initial yellow color had dissipated. The reaction mixture was stirred at ambient temperature for one hour, after which time the solvent was removed by evaporation at reduced pressure. Th crystalline product was thoroughly dried in vacuo (0.1 mm Hg). Analysis calculated for C3H9Cl5O3PSb: % Cl=41.9, observed=42.0%. NMR (CDCl3, TMS): δ4.12 (d,6H,J=11.6 Hz), 2.08 (d,3H,J=17.6 Hz).

Workup

  1. additionTo this yellow solution was added dropwise
  2. additionThe addition
  3. temperaturecooling should not
  4. additionBy the end of the addition
  5. customafter which time the solvent was removed by evaporation at reduced pressure
  6. customTh crystalline product was thoroughly dried in vacuo (0.1 mm Hg)

Sources & evidence

ORD record
ord-1c0c547777654616b4886c030396308f
Source dataset
uspto-grants-1983_03
Patent number
US04376063

Linked notes

Loading…