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US 3,944,557 AGranted
Pyridinium salts
AssigneeCommonwealth Scientific and Industrial Research Organization
InventorJohn Norbert Phillips
Life of this patent
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Abstract
The compounds of the invention are of the class of 2-amino-4-substituted amino-5-cyano pyridinium salts, useful as fungicidal agents. The preparation of these salts by reaction of an N-substituted cyano acetamide with a phosphorous halide or oxyhalide is described.
Claims8
Compound of the formula:
- ##SPC5##
- wherein:
- Y is selected from the group consisting of hydrogen and halogen;
- R is selected from the group consisting of straight or branched-chain alkyl or a chloro, bromo, nitro, lower alkoxy, pyridyl, carboxyl or furyl substituted alkyl of one to twelve carbon atoms;
- a cycloalkyl or a chloro, bromo, nitro, lower alkoxy, pyridyl, carboxyl or furyl substituted cycloalkyl of 5 to 10 carbon atoms;
- and aralkyl;
- R' is selected from the group consisting of hydrogen;
- halogen;
- sulphonate;
- azido;
- radicals of the formula --NH--SO.sub.2 --R.sub.1 wherein R.sub.1 represents p-toluyl or a straight-or branched-chain alkyl or a chloro, bromo, nitro, lower alkoxy, pyridyl, carboxyl or furyl substituted alkyl of one to twelve carbon atoms or radicals of the formula ##EQU2## radicals of the formula --CH--(CN)--R.sub.2, wherein R.sub.2 represents --COOH, --COO (lower alkyl) or --NH--CO--NH.sub.2 ;
- and radicals of the formulae --NH--R", --S--R" or --O--R", wherein R" represents hydrogen, a straight- or branched-chain alkyl or a chloro, bromo, nitro, lower alkoxy, pyridyl, carboxyl or furyl substituted alkyl of up to 12 carbon atoms, alkenyl of at least three carbon atoms or alkynyl, a phenyl, benzyl or cyano, furfuryl, carboxymethyl, 2-bromoethyl, 2-picolyl, dimethyl-thiocarbamoyl or diethylthiocarbamoyl;
- and
- A.sup.- represents an anion.
11 more elements
The compound of the formula ##SPC7##
- wherein
- Y is hydrogen, R is n-octyl and R' is chloro.
Dependencies are inferred from the claim text.