Basf Aktiengesellschaft

Juergen Markert

Helmut Hagen

Bruno Wuerzer

Rolf-Dieter Kohler

Karl Eicken

Norbert Meyer

Peter Plath

Wilhelm Rademacher

Johann Jung

Volker Fischer

Henning Rosebrock

Max Luib

Akihide Watanabe

The development of crops is influenced by means of one or more 7-chloroquinoline-8-carboxylic acids of the general formula ##STR1## where R is fluorine, chlorine, bromine, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -haloalkyl.

Influencing the development of crops with 7-chloroquinoline-8-carboxylic

Quinoline-8-carboxylic acid azolides of the formula ##STR1## where A, X and R have the meanings given in the disclosure, and their use as herbicides.

Quinoline-8-carboxylic acid azolides and their use as herbicides

3,7-Dichloroquinoline derivatives which are substituted in the 8-position by --CH.dbd.CHR or --CH.dbd.NR.sup.5, and their use for controlling undesirable plant growth.

3,7-dichloro-8-quinoline derivatives, and their use for controlling

Dichloroquinoline derivatives of the formula ##STR1## where R.sup.1, X and Y have the meanings given in the claims, are prepared as described, and are used as herbicides.

Dichloroquinoline derivatives for use as herbicides

3-Chloro-8-cyanoquinolines of the formula ##STR1## where R.sup.1 is --NR.sup.2 R.sup.3, and R.sup.2 and R.sup.3 are identical or different and are each hydrogen, C.sub.1 -C.sub.8 -alkyl, formyl, cyclohexyl, or phenyl, or together are tetramethylene or pentamethylene, and one methylene group in these radicals can be replaced by oxygen, nitrogen or --N(CH.sub.3), are used for controlling undesirable plant growth.

3-Chloro-8-cyanoquinolines and their use for controlling undesirable

Dichloroquinoline derivatives of the formula ##STR1## are prepared as described, and are used as herbicides.

Novel 1,2-benzisothiazoles and a process for the manufacture of 1,2-benzisothiazoles by reacting o-haloaryl ketones with ammonia and elementary sulfur. The compounds are starting materials for the manufacture of dyes, crop protection agents and drugs.

Growing community of inventors

Mutterstadt, Germany

Juergen Markert