Phosphorous acid → HCID 178527070, compound

HRID 374237Notes

Reaction equation

HRID 374237 reaction equation
C1(C2C=CC([P:17]([OH:20])(=[O:19])[OH:18])=CC=2)C=CC([P:7]([OH:10])(=[O:9])[OH:8])=CC=1.[P:21](O)([OH:23])[OH:22]>CS(C)=O.O>[PH:21]([O:20][PH:17]([OH:18])=[O:19])([OH:23])=[O:22].[P:7]([OH:10])([OH:9])[OH:8]

Participants

5

Reactant 2

HCID 107909Phosphorous acidHCID 279154biphenyl-4,4'-diylbis(phosphonic acid)

Product 1

HCID 178527070HCID 178527070, compound

Reagents, catalysts & solvents 2

HCID 679Dimethyl SulfoxideSolventHCID 962WaterSolvent

Procedure

0.19 g of 4,4'-(biphenyl) diphosphonic acid and 0.77 g of phosphorous acid are dissolved in 18 ml of DMSO in a plastic container kept at a temperature of 80° C. 0.80 g of ZrOCl2.8H2O dissolved in 1.5 ml of concentrated HF and 1 ml of water, are added to the clear solution. The solid obtained after 24 hours, separated, washed, dried and analysed as described in Example 1, gave a diphosphonic acid/phosphorous acid molar ratio of 0.8:1 and a distance between layers of 14 Å. Measurement of the surface area gives a value of 300 m2 /g with a pore distribution concentrated at a maximum at 22 Å.

Workup

  1. customkept at a temperature of 80° C
  2. additionare added to the clear solution
  3. customThe solid obtained after 24 hours
  4. customseparated
  5. washwashed
  6. customdried

Sources & evidence

ORD record
ord-98429c5fcd6b40d0b303923ae5273a05
Source dataset
uspto-grants-1992_11
Patent number
US05166380

Reaction notes

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