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US 6,218,563 B1Granted
Cyanophosphonamides and method for preparation
AssigneeMonsanto Company
InventorsPatrick J. Lennon, Serge G. Vulfson
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Abstract
The present invention provides a process for preparing a cyanophosphonamide comprising contacting phosphoric anhydride and a cyanide, preferably in the presence of a Lewis base, to produce a cyanophosphonate intermediate, and subsequently contacting the cyanophosphonate intermediate with an amino compound.
Claims48
A process for preparing a cyanophosphonamide comprising:
- first reacting phosphoric anhydride and a cyanide in a reaction to produce a cyanooxyphosphorus compound, and
- second reacting the cyanooxyphosphorus compound with an amino compound to produce the cyanophosphonamide.
A process for preparing a cyanophosphonamide, comprising:
- providing a cyanooxyphosphorus compound;
- and,
- reacting the cyanooxyphosphorus compound with an amino compound to produce the cyanophosphonamide.
Dependencies are inferred from the claim text.