Carbon dioxide assisted hydrolysis of aminophosphonates

Details Carbon dioxide assisted hydrolysis of aminophosphonates Carbon dioxide assisted hydrolysis of aminophosphonates

1998-10-15

2000-03-21

Geist, Gary

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

Organic compounds

Persulphonic acids or salts thereof

562 11, C07F 938

Patent

active

060404760

ABSTRACT:
The invention provides a process for preparing aminophosphonic acids comprising contacting an aminophosphonate ester with a base in the presence of a hydrolysis facilitator selected from the group consisting of CO.sub.2, CS.sub.2 and COS. In one embodiment, the aminophosphonate ester is first prepared by contacting an amine, trialkylphosphite, base and formaldehyde.

REFERENCES:
patent: 4439373 (1984-03-01), Nagubandi
patent: 4548760 (1985-10-01), Nagubandi
Advanced Inorganic Chemistry by Cotton and Wilkinson, pp. 296-297, 1972.
Advanced Organic Chemistry by March, 1986.

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