Shell Research Limited

Shell Internationale Research Maatschappij, B.v.

William W Wood

Thomas W Naisby

Andrew C Gray

Michael Pearson

Susan J Turner

Werner E Simon

Tarnia M Machin

Biocidal compositions comprising novel azophenyl compounds which are suitable as fungicidal agents are provided which comprise a carrier and, as active ingredient, a compound of the general formula

Biocidal azophenyl compositions

Compounds of the general formula ##STR1## where R.sup.2 and R.sup.3 together, or R.sup.3 and R.sup.4 together, represent an optionally substituted hydrocarbyloxy chain; the ring is optionally substituted at any or each of the remaining sites R.sup.5, R.sup.6 and R.sup.2 or R.sup.4 : n represents 0 or 1; and X represents a cyano group, a group --COOH or a salt, ester or amido derivative thereof; are biocidal, showing activity against fungi, yeast, bacteria and nematodes. Some such compounds, and intermediates therefore, are novel.

Bicyclic or tricyclic biocidal compounds

A process for the preparation of a compound of general formula ##STR1## wherein X represents a cyano group, a group --COOH or a salt, ester or amido derivative thereof, R.sup.1 represents a hydrogen atom or an optionally substituted alkyl group, R.sup.2 represents an optionally substituted alkyl or phenyl group, Z represents an alkyl group or a halogen atom and n represents 0, 1, 2, 3 or 4, the process comprising reacting a compound of general formula ##STR2## with a first reactant capable of both dehydrating the amide group of said compound of general formula IV, to form a group X wherein X represents a cyano group, and reacting with the carboxy group of said compound of general formula IV to form a group with which a compound of general formula R.sup.1 R.sup.2 NH may react; subsequently reacting the resulting compound with a compound of general formula R.sup.1 R.sup.2 NH to form a compound of general formula III wherein X represents a cyano group; and optionally derivatizing that compound to form other compounds of general formula III, is disclosed.

Process for the preparation of substituted azoxycyanides

The invention provides compounds of general formula ##STR1## wherein m is 0 or 1; each of R.sup.1 and R.sup.2, and R.sup.3 and R.sup.4 if present, independently represents a hydrogen or halogen atom or an optionally substituted alkyl, cycloalkyl or aryl group, or R.sup.1 and R.sup.2 together or R.sup.3 and R.sup.4 together represent an optionally substituted alkylene chain; X represents a cyano group, a group --COOH or a salt, ester or amido derivative thereof; Y represents an alkyl group or a halogen atom; and n represents 0, 1, 2 or 3; a process for their preparation; compositions containing such compounds and their use as fungicides.

Biocidal compounds

Biocidal azophenyl compounds

Novel compounds of the general formula ##STR1## where R represents an optionally substituted aryl or heteroaryl group; X represents a hydrogen atom or an amino group or an optionally substituted alkyl, aryl or heteroaryl group; and Z represents a hydrogen atom or alkanoyl group; are fungicidal.

Growing community of inventors

Sittingbourne, United Kingdom

William W Wood