The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 12, 1999
Filed:
Dec. 23, 1997
Applicant:
Inventors:
Patrick J Lennon, Webster Grove, MO (US);
Sergey G Vulfson, Chesterfield, MO (US);
Assignee:
Monsanto Company, St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ; C07F / ; C01B / ;
U.S. Cl.
CPC ...
423302 ; 558 87 ; 558145 ; 558166 ; 558167 ; 562 16 ; 564281 ; 564291 ; 564292 ; 568-9 ; 568 18 ; 568 27 ;
Abstract
A process for preparing cyanophosphonate derivatives involves contacting phosphoric anhydride (P.sub.4 O.sub.10) and a cyanide, preferably in the presence of a Lewis base, in a reaction mixture under sufficient conditions to produce a cyanophosphonate derivative. The cyanophosphonate derivative can be subsequently hydrogenated to produce an aminomethylphosphonate derivative.