Imperial Chemical Industries Limited

Alan T Costello

Brian R Fishwick

Peter J Smith

David Boyd Baird

Robert D McClelland

David J Milner

Peter W Austin

John David Jones

Cecil V Stead

Allen Crabtree

Duncan Adrian Phillips

Brian Anderson

Robert J Lindsay

Neville Jackson

A process for the production of a substituted amide of the formula: ##STR1## where R.sup.1 is an optionally substituted aryl group, X.sup.1 is --O-- or --S-- and R.sup.2 is an optionally substituted alkyl, alkenyl, or alkynyl group or X.sup.1 R.sup.2 is an N-linked 5-membered nitrogen heterocycle comprising the halogenation, preferably bromination, in an inert solvent of a N-cyanomethyl-amide of the formula R.sup.1 --CONH.CH.sub.2 CN, followed by addition to the halogenated mixture, or to the mixture as halogenation is taking place, of a heterocyclic tertiary amine in a proportion of from about 1.0 to about 2.5 moles, and preferably from 1.3 to 2.1 moles, for each mole of halogen reacted, and finally treatment of the resulting quaternary salt with an alcohol, thiol or amine of the formula R.sup.2 X.sup.1 H.

Chemical process

Process for the monohalogenation of a benzene compound which has 2 or 3 CH.sub.2 OH substituents to obtain a product wherein one of the CH.sub.2 OH substituents is monohalogenated which comprises reacting an aqueous solution of the compound with hydrochloric or hydrobromic acid in the presence of a water immiscible organic solvent which is inert to the reactants, the partition coefficient of the compound in the aqueous/organic phases being greater, with respect to the aqueous phase, than the partition coefficient of the product. The novel compounds

Selective halogenation of benzene di and tri-methanol compounds

1-Cyano-3-[2',2'-(dihalogeno and/or trifluoromethyl)vinyl]-2,2-dimethylcyclopropanes are converted into the corresponding 1-amides and 1-carboxylic acids by reaction with sulphuric acid and water, or into the corresponding 1-carboxylic acid esters by reaction with sulphuric acid, water and a lower alkanol. High yields are obtained.

Process for preparing cyclopropane carboxylic acids

A dyestuff of the formula ##STR1## where D is a chromophoric residue

Reactive dyestuffs containing chlorine or fluorine substituents and one

Disperse monoazo dyestuffs, free from carboxylic and sulphonic acid groups, derived from 3,5-dinitro-2-amino thiophene as disazo component and an arylamine coupling component exhibit superior properties when used to give colorations to textile materials such as secondary cellulose acetate and cellulose triacetate, polyamide and aromatic polyester textile materials, said colorations having excellent fastness to light and to wet and dry heat treatments. The dyestuffs also have high tinctorial strength and excellent dyeing and build-up properties and produce depths of shade which are relatively independent of the dyebath pH, or the temperature of the dyebath or the liquor ratio of the dyebath.

Disperse monoazo dyestuffs derived from 3,5-dinitro-2-amino thiophene as

The compounds of the formula ##STR1## wherein X is a lower alkylsulphonyl, phenylsulphonyl, cyano, carbonamido, carboxylic acid or carboxylic acid ester group;

2-Aminothiophenes

The water-insoluble monoazo dyestuffs, free from sulphonic acid and carboxylic acid groups, which are of the formula: ##STR1## wherein Y is hydrogen, lower alkyl, optionally substituted phenyl or nitro; Z is nitro, cyano, optionally substituted phenyl, optionally substituted lower alkoxycarbonyl or carbonamido; T is hydrogen, optionally substituted lower alkyl or optionally substituted lower alkoxy; W is an acylamino group of the formula: ##STR2## wherein X.sup.1 is hydrogen or lower alkyl, X.sup.2 is hydrogen or an optionally substituted hydrocarbon or heterocyclic radical, and A is a direct link or --0-- or ##STR3## and R.sup.1 and R.sup.2 each independently represent a hydrogen atom or an optionally substituted alkyl radical or R.sup.1 and R.sup.2 together form with the nitrogen atom N a 5- or 6-membered nitrogen-containing heterocyclic ring, a process for the manufacture of the said dyestuffs by diazotization and coupling, and the use of the said dyestuffs for coloring synthetic textile materials, in particular aromatic polyester textile materials which they color in violet to green shades possessing excellent fastness to light, to wet treatments and to dry heat treatments.

Disperse monoazo dyestuffs containing a thiophene residue

Dyestuffs of the formula: ##SPC1## In which

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Manchester, United Kingdom

Alan T Costello