C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
260/501.1
C07F 9/38 (2006.01)
Patent
CA 2003852
PREPARATION OF N-ACYL-AMINOMETHYLPHOSPHONATES N-Acyl-aminomethylphosphonic acids represented by the formula Image wherein R is selected from the group consisting of methyl and aryl are prepared by: (a) bringing together under substantially anhydrous reaction conditions an amide represented by the formula Image wherein R is as defined above and paraformaldehyde; and thereafter, (b) adding phosphorous trihalide to the reaction mixture.
Baysdon Sherrol Lee
Fields Donald Lee Jr.
Mcfadden Fincham
Monsanto Company
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