Process for the production of sulphoalkyl quaternary salts
AssigneeAgfa-Gevaert
InventorsHelmut Kampfer, Max Glass
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Abstract
Sulphoalkyl and sulphoalkenyl quaternary salts of heterocyclic nitrogen compounds are prepared by reacting heterocyclic compounds containing a tertiary ring nitrogen atom at an elevated temperature with an O-sulphoalkyl or O-sulphoalkenylisourea compound.
Claims3
The process for the production of heterocyclic sulfobetaine compound of the formula ##STR6## in which X represents an alkylene or alkenylene radical having 1 to 7 carbon atoms
- Y represents hydrogen, halogen, an alkyl or alkenyl radical having 1 to 6 carbon atoms, or an alkoxy, alkylthio or mercapto group
- Z represents the residue required to complete a heterocyclic group comprising at least one 5- or 6-membered heterocyclic ring selected from the group consisting of pyrroline, oxazoline, thiazoline, selenazoline, imidazole, oxazole, thiazole, selenazole, oxadiazole, thiadiazole and pyridine rings, and
- n represents 0 or 1,
- by reacting at a temperature of from 80.degree. to 200.degree. C. a heterocyclic compound of the formula ##STR7## in which Y, Z and n are as defined above with an isourea compound of the formula ##STR8## in which X is as defined above and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 being the same or different represent hydrogen, an alkyl, alkenyl, benzyl or cycloalkyl radical, or two of the substituents R.sup.1, R.sup.2, R.sup.3 and R.sup.4 complete together a 5-membered heterocyclic ring containing at least two nitrogen atoms, or R.sup.1 and/or R.sup.3 represent a phenyl group if the other substituent at the same nitrogen atom (R.sup.2, R.sup.4) is hydrogen.
The process for the production of anhydro-2,5,6-trimethyl-3-(3-sulfopropyl)-benzothiazolium hydroxide by reacting at a temperature of from 80.degree. to 200.degree. C. 2,5,6-trimethylbenzothiazole with anhydro-O-(3-sulfopropyl)-isouronium hydroxide.
Dependencies are inferred from the claim text.