Zeneca Limited

Imperial Chemical Industries Limited

Gareth Andrew DeBoos

John David Jones

Brian Geoffrey Cox

Jan Michael Fielden

Paul Wilkinson

Stephen Martin Brown

David J Milner

David F Newton

Nigel Hughes

James Peter Muxworthy

A process for the preparing agrochemical intermediates of formula (I): ##STR1## wherein W is (CH.sub.3 O) CH.CHCO.sub.2 CH.sub.3 or CH.sub.3 O.CH.dbd.CCO.sub.2 CH.sub.3 ; Z.sup.1 is a halogen atom; and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen, halogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, acetoxy or acyl; the process comprising the steps of:

Chemical process

Compounds of the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen, halogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, acetoxy or acyl, and processes for preparing the same.

Process for the preparation of

Benzodifurantriones of Formula (1): ##STR1## in which W is unsubstituted or substituted aryl, a process for their preparation via dioxo intermediates and processes for their conversion into benzodifuranone dyes and compounds of Formula (7): ##STR2## are provided wherein R.sup.3 is --H, --COR.sup.2, --SO.sub.2 R.sup.2 -- which R.sup.2 is alkyl, cycloalkyl, aryl or aralkyl and R.sup.4 is --COOR.sup.2, --CONRR.sup.1 in which R and R.sup.1 each independently is --H, alkyl, cycloalkyl, aryl or aralkyl; --COOH or the alkali metal, alkaline earth metal or ammonium salts thereof; or --COX.sup.2 -- which X.sup.2 is halo.

Benzofuranone and benzodifuranone compounds

A process for the preparation of an N-(alkylsulphonyl)amide, the process comprising reacting a primary amide with a sulphonyl halide in the presence of a base which is sufficiently strong to cause at least partial deprotonation of the amide.

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Ramsbottom, United Kingdom

Gareth Andrew DeBoos