Compounds of the general formula (I) a process for their preparation and their use for dyeing and/or printing organic substrates.
1. A compound of formula (I)
wherein
R 1 is unbranched or branched C -6 alkyl,
R 2 is H or methyl or unbranched C 2-4 alkyl or branched C 3-4 alkyl,
R 3 is H or methyl or unbranched C 2-4 alkyl or branched C 3-4 alkyl or methoxy or unbranched —OC 2-4 alkyl or branched —OC 3-4 alkyl or —NHCO—(C 1-4 alkyl) with an unbranched C 1-4 alkyl group or —NHCO—(C 3-4 alkyl) with a branched C 3-4 alkyl group.
2. A compound according to claim 1 , wherein
R 1 is unbranched or branched C -6 alkyl,
R 2 is H or methyl
R 3 is H, methyl, methoxy, ethoxy or acetylamino.
3. A process for preparing compounds of formula (I) according to claim 1 , comprising the step of esterifying a compound of the formula (II)
under basic conditions with a substituted sulphonyl chloride of formula (III)
wherein
R 1 is unbranched or branched C -6 alkyl,
R 2 is H or methyl or unbranched C 2-4 alkyl or branched C 3-4 alkyl
R 3 is H or methyl or unbranched C 2-4 alkyl or branched C 3-4 alkyl or methoxy or unbranched —OC 2-4 alkyl or branched —OC 3-4 alkyl or —NHCO—(C 1-4 alkyl) with an unbranched C 1-4 alkyl group or —NHCO—(C 3-4 alkyl) with a branched C 3-4 alkyl group.
4. A process for dyeing and/or printing an organic substrate, comprising the step of contacting the organic substrate with at least one compound of claim 1 , a salt of the at least one compound of claim 1 or a mixture thereof.
5. A process according to claim 4 , wherein the organic substrate is selected from the group consisting of wool, silk, synthetic polyamide, and mixtures thereof.
6. A process for producing a printing ink for the InkJet process, comprising the step of adding at least one compound of claim 1 , a salt of the at least one compound of claim 1 or a mixture thereof to said printing ink.
7. A printing ink comprising at least one compound of claim 1 or a salt of the at least one compound of claim 1 or a mixture thereof.
8. An organic substrate made by the process in accordance with claim 4 .
9. A process for producing an inkjet ink, comprising the step of combining at least one compound of formula (I) according to claim 1 , with at least one additional chemical and/or water.