Compounds for combating plant disease

US5534541A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Karlheinz Drauz · Alzenau, DE
• Jurgen Martens · Alzenau, DE

Key dates

• Filing date: Jan 23, 1995
• Grant date: Jul 9, 1996
• Expiry date: Jan 23, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D417/06
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Halogen thiophene carboxylic acid derivatives of the General Formula ##STR1## in which Hal signifies chlorine or bromine, n the number 2 or 3, * signifies either an enantiomer or a racemate in the case of different R.sup.2 and R.sup.3 groups, R.sup.1 stands for hydrogen or an alkyl group, R.sup.2 stands for hydrogen, an alkyl group which can optionally be substituted by hydroxy-, carboxy-, alkoxy- or alkoxycarbonyl, mercapto- or alkylmercapto- or benzylmercapto, for an aryl group or aralkyl group, wherein the ring system can optionally be substituted with fluorine, chlorine or bromine atoms, for a cycloalkyl group or a cycloalkyl-methyl group, R.sup.3 stands for hydrogen, an alkyl group, an alkenyl or alkynyl group or, optionally, R.sup.1 and R.sup.3 or R.sup.2 and R.sup.3 together can form an alkylene bridge in which one CH.sup.2 unit can optionally be substituted by NR.sup.1, O or S, Y signifies OH, OR.sup.4 or NR.sup.5 R.sup.6, in which R.sup.4 stands for an alkyl group whose H atoms are optionally replaced entirely or partially by halogen atoms, R.sup.5 signifies hydrogen, an alkyl group, hydroxy- or an alkoxy group, R.sup.6 signifies hydrogen, an alkyl group, a phenyl group or…