CA1039739A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Process for the production of n-(phosphonomethyl) glycine
Assignee: Monsanto Co
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Filing: 1975-12-10
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Granted: 1978-10-03
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Expires: 1995-12-10
Abstract
Abstract Abstract of the Disclosure N-(phosphonomethyl)glycine is produced by the re-duction of a carbonylaldiminomethanephosphonate. The carbonyl-aldiminomethanephosphonate is produced by the reaction of glyoxal or glyoxylic acid or its esters with aminomethyl-phosphonic acid esters. The N-(phosphonomethyl)glycine produced is useful as a post-emergent herbicide.
Inventors
- 👤 Van R. Gaertner
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-08 01:35
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3808; C07F9/3813
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
67 words
A process for the production of N-(phosphono-methyl)glycine compounds of the formula wherein X and Y are independently hydrogen or lower alkyl and Z is hydrogen or lower alkoxyl which comprises contacting a carbonylaldiminomethanephosphonic acid compound of the formula wherein X, Y and Z are as above defined with hydrogen in the presence of a hydrogenation catalyst whereby said carbonyl-iminomethanephosphonic acid compound is reduced to said N-(phosphonomethyl)glycine compound.
Claim 2
Dependent Claim
67 words
A process for the production of N-(phosphono-methyl)glycine compounds of the formula wherein X and Y are independently hydrogen or lower alkyl and Z is hydrogen or lower alkoxyl which comprises contacting a carbonylaldiminomethanephosphonic acid compound of the formula wherein X, Y and Z are as above defined with hydrogen in the presence of a hydrogenation catalyst whereby said carbonyl-iminomethanephosphonic acid compound is reduced to said N-(phosphonomethyl)glycine compound.
Claim 3
Dependent Claim
14 words
A process as claimed in Claim 1 wherein the reaction is conducted under pressure.
Claim 4
Dependent Claim
17 words
A process as claimed in Claim 2 wherein the hydrogen pressure is from 1 to 100 atmospheres.
Claim 5
Dependent Claim
17 words
A process as claimed in Claim 3 wherein the hydrogen pressure is from 1 to 10 atmospheres.
Claim 6
Dependent Claim
21 words
A process as claimed in Claim 1 wherein the hydrogenation catalyst is Raney nickel, Raney cobalt, platinum, palladium, rhodium or iridium.
Claim 7
Dependent Claim
13 words
A process as claimed in Claim 5 wherein the hydrogenation catalyst is palladium.
Claim 8
Dependent Claim
17 words
A process as claimed in Claim 6 wherein the carbonylaldiminomethanephosphonic acid compound is a lower alkoxyl ester.
Claim 9
Dependent Claim
15 words
A process as claimed in Claim 7 wherein the hydrogenation product is hydrolyzed to N-(phosphonomethyl)glycine.
Claim 10
Dependent Claim
14 words
A process as claimed in Claim 7 wherein the carbonylaldiminomethanephosphonic acid compound is diethylcarbo-n-butoxyaldiminomethanephosphonate.
References Cited (Backward Citations)
No citation records indexed.
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