Monofluoro- and difluoro-methylenebisphosphonic acids: isopolar analogues of pyrophosphoric acid
作者:G. Michael Blackburn、David A. England、Friedrich Kolkmann
DOI:10.1039/c39810000930
日期:——
New syntheses are described for the preparation of monofluoromethylenebisphosphonic and difluoromethylenebisphosphonic acids whose physical properties show them to be good isopolaranalogues of pyrophosphoricacid of significant biological potential.
Process for preparing alpha-fluorinated alkanediphosphonates
申请人:Univ. of Southern California
公开号:US04478763A1
公开(公告)日:1984-10-23
A method for the production of alpha-fluorinated methane diphosphonates consists of the reaction of diphosphonate esters with a strong base, preferably potassium t-butoxide, and perchloryl fluoride to produce alpha-mono and alpha,alpha-difluorinated derivatives which can be converted to the corresponding acids by mild hydrolysis. The synthesis of unsymmetrical alpha-fluorinated methanediphosphonate esters followed by selective hydrolysis produces unsymmetrical diesters of diphosphonic acids.