Thiophene derivatives

US5206375A · kind A · utility

Assignee

• BASF SE

Inventors

• Ernst Schefczik
• Karl-Heinz Etzbach · Bischofswerda, DE
• Heinz Eilingsfeld · Bischofswerda, DE

Key dates

• Filing date: Apr 8, 1992
• Grant date: Apr 27, 1993
• Expiry date: Apr 8, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B29/0059
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The novel compound of the general formula I ##STR1## where X is fluorine, chlorine, bromine, SO.sub.2 Y or unsubstituted or substituted hydroxyl or mercapto, Y is alkyl, alkenyl, cycloalkyl, aralkyl, aryl, chlorine or unsubstituted or substituted hydroxyl or amino, R is hydrogen, C.sub.1 -C.sub.4 -alkyl or a radical which can be introduced by electrophilic substitution or a radial of the formula --CH.dbd.T, in which T is a radical of a methyleneactive compound or of an amine, and R.sup.1 is hydrogen, acyl or unsubstituted or substituted alkyl, cycloalkyl or alkenyl, and R.sup.2 is hydrogen or unsubstituted or substituted alkyl or alkenyl, or R.sup.1 and R.sup.2 together with the nitrogen form a saturated heterocyclic structure and R.sup.1 and R.sup.2 together form a radical of the formula ##STR2## are useful as diazo and/or coupling components or generally as dye intermediates, depending on their constitution.