Process for producing biphosphonic acids and forms thereof

Details Process for producing biphosphonic acids and forms thereof Process for producing biphosphonic acids and forms thereof

2011-01-18

2011-01-18

Saeed, Kamal A (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C546S022000, C546S023000, C564S015000

Reexamination Certificate

active

07872144

ABSTRACT:
Disclosed herein is a process for producing bisphosphonic acids and salts thereof. The process comprising reacting a carboxylic acid of Formula [I] with phosphorous acid and halophosphorus compound in the presence of a solvent selected from aliphatic hydrocarbon or water miscible cyclic ether. Further, the present invention also provides novel forms of bisphosphonic acids and process for preparation thereof.

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