Production of 2,4,6-triaminopyrimidine-3-oxides and...

Details Production of 2,4,6-triaminopyrimidine-3-oxides and... Production of 2,4,6-triaminopyrimidine-3-oxides and...

C - Chemistry, Metallurgy

07

D

260/540.2, 260/3

C07D 295/14 (2006.01) C07D 239/50 (2006.01) C07D 295/195 (2006.01)

Patent

CA 1038388

ABSTRACT OF THE DISCLOSURE A method for preparing 6-amino-5-R3- 2,4,diaminopyrididine-3-oxides which comprises a O-alkylating an R3-substituted 2-cyano acetamide Image in the presence of an inert organic solvent, thereby forming an enol ether Image where R is the alkyl from the alkylating agent, b. reacting said enol ether with cyanamide in an inert solvent, thereby forming a 2-R3-3-(cyanimino)-3- Nr1R2 proplonitrile Image c. reacting the 2-R3-3-(cyanimino)-3-NR1R2- proplonitrile with a hydroxylamine salt and base, there- by forming the 6-amino-5-R3-substituted-2,4,-diamino- pyrimidine-3-oxide Image . -1-

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