C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
260/501.5
C07F 9/38 (2006.01)
Patent
CA 1275418
ABSTRACT OF THE DISCLOSURE A process for the preparation of an N-substituted aminomethylphosphonic acid represented by the formula: Image wherein R1 is alkyl or carboxylakyl, and R2 is carboxyalkyl, is disclosed. The process comprises: preparing a mixture of an aqueous acidic medium comprising phosphorous acid; an acid selected from the group consisting of sulfuric acid, hydrochloric acid and hydrobromic acid; and a substituted substrate compound represented by the formula: Image wherein R1 and R2 are as defined above, Y is oxygen or sulfur, and R3 is selected from the group consisting of alkyl and carboxyalkyl; heating the mixture to a temperature between about 70°C and 120°C; and thereafter slowly adding formaldehyde to the mixture.
518771
Miller William H.
Pulwer Mitchell J.
Reitz David B.
Mcfadden Fincham
Miller William H.
Monsanto Company
Pulwer Mitchell J.
Reitz David B.
LandOfFree
Process for the preparation of n-substituted... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the preparation of n-substituted..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of n-substituted... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1238503