1-Hydroxy-omega-(alkyl- or arylphosphinico)alkane-1,1-diphosphon

Details 1-Hydroxy-omega-(alkyl- or arylphosphinico)alkane-1,1-diphosphon 1-Hydroxy-omega-(alkyl- or arylphosphinico)alkane-1,1-diphosphon

1989-02-09

1990-10-02

Shah, Mukund J.

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

Organic compounds

Phosphorus acids or salts thereof

562 22, 562817, 562876, C07F 938

Patent

active

049609289

ABSTRACT:
The present invention relates to 1-hydroxy-.omega.-(alkyl- or arylphosphinico)alkane-1,1-diphosphonic acids of the general formula I ##STR1## and to the salts of these acids of the general formula II ##STR2## where, in these formulae, R.sup.1 denotes an alkyl radical having 1 to 6 carbon atoms, a cycloalkyl radical having 5 to 7 carbon atoms or an aryl radical having 6 to 10 carbon atoms, R.sup.2 denotes a straight-chain or branched alkylene radical having 1 to 6 carbon atoms and A denotes a monovalent equivalent of a cation of an inorganic or organic base. In addition, processes are described for the preparation of these novel compounds.

REFERENCES:
patent: 4440646 (1984-04-01), Budnick
patent: 4892679 (1990-01-01), Blum et al.

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