Commonwealth Scientific and Industrial Research Organisation

John N Phillips

John L Huppatz

Roger L Harris

Barbara Witrzens

Crotonic acid derivatives of the formula ##STR1## wherein R.sup.1 is optionally substituted alkyl or optionally substituted aryl;

Herbicidal crontonic acid derivatives, their preparation and

Anthranilic acid derivatives exhibiting fungicidal properties and useful as synthesis intermediates have the formula: ##STR1## wherein R is selected from the group consisting of a hydrogen atom; a --COOR.sup.3 group and a --CH.sub.2 OH group; R.sup.1 and R.sup.2 are the same or different and selected from the group consisting of a hydrogen atom and alkyl and cycloalkyl groups (provided that R.sup.1 and R.sup.2 are not both hydrogen atoms), or R.sup.1 and R.sup.2, together with the nitrogen atom to which they are attached, form a non-aromatic heterocyclic ring structure;

Substituted anthranilates

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.

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Yarralumla, Australia

John N Phillips