Looking for a source of 2-Amino-5-chlorophenylphosphonic Acid; 500
grams to 1 kilogram. Need fairly quickly.
One method of manufacture involves the conversion of 3-chloroaniline
to the diazonium fluoborate, reaction of this salt with phosphorous
trichloride to give 3-chlorophenylphosphonic acid. Nitration with 90%
fuming nitric acid provides 2-chloro-5-nitrophenylphosphonic acid
which is reduced to the desired compound with alkaline ferrous
sulfate. Detail available.
Please contact via email if you already have material available or are
in a position to provide it.