Basf Aktiengesellschaft

Hans J Pander

Bruno Wuerzer

Karl Eicken

Hardo Siegel

Norbert Meyer

Knut Oppenlaender

Peter Plath

Wolfgang Rohr

Dieter Degner

Barbara A Schwalge

Lothar Rueb

Rolf Schneider

Juergen Mohr

Herbert Toussaint

Juergen Thomas

Peter Schreyer

Otto Woerz

Fuels and lubricants contain, as detergents, N-alkylcarboxamides prepared from olefins by the Ritter reaction.

Fuels and lubricants containing n-alkylcarboxamides

Abstract of the disclosure: A process for the continuous preparation of 3-cyano-3,5,5-trimethylcyclohexanone by base-catalyzed reaction of isophorone and hydrogen cyanide, comprises carrying out the reaction in two separate reaction zones

Continuous preparation of 3-cyano-3,5,5-trimethylcyclohexanone

N-Phenyltetrahydrophtalimides of the general formula I ##STR1## where R.sup.1 is hydrogen or halogen, R.sup.2 is halogen, R.sup.3 is hydrogen or C.sub.1 -C.sub.4 -alkyl, R.sup.4 is unsubstituted or C.sub.1 -C.sub.3 -alkoxy-substituted C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.4 -alkenyl or C.sub.3 -C.sub.4 -alkynyl, and R.sup.5 is hydrogen or C.sub.1 -C.sub.4 - alkyl, methods for their manufacture, and their use as herbicides.

N-phenyltetrahydrophthalimides

3-Cyanoaldehydes of the formula I ##STR1## where R.sup.1 and R.sup.2 are each C.sub.1 -C.sub.6 -alkyl and R.sup.3 is hydrogen or C.sub.1 -C.sub.3 -alkyl, are prepared by a process wherein an aldehyde of the formula II ##STR2## is reacted with anhydrous hydrocyanic acid in the presence of a basic catalyst, in a solvent.

Preparation of 3-cyano-2-alkylalkanals

4-Tert.-butoxyphenylglycinonitrile (I) ##STR1## and a process for the preparation of D-(-)-4-hydroxyphenylglycine (IIa) and L-(+)-4-hydroxyphenylglycine (IIb) ##STR2## wherein compound I is reacted in a conventional manner, in alcoholic solution and in the presence of a carbonyl compound, with about the equimolar amount of L-(+)-tartaric acid or D-(-)-tartaric acid and the D-(-)-I-L-(+)-tartrate or L-(+)-I-D-(-)-tartrate thereby obtained in crystalline form is converted to IIa or IIb respectively in aqueous acid solution at 20.degree.-110.degree. C. by splitting off the L-(+)-tartaric acid or D-(-)-tartaric acid, hydrolyzing the nitrile group and hydrolytically splitting off the tert.-butyl group.

4-Tert.-butoxyphenylglycinonitrile and the preparation of D-(-)- and

New tetrahydro-1,3-oxazines of the formula ##STR1## where R denotes linear or branched haloalkyl of up to 3 carbon atoms, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are identical or different and each denotes hydrogen or linear or branched alkyl of up to 3 carbon atoms, R.sup.6 denotes hydrogen or linear or branched alkyl of up to 8 carbon atoms, R.sup.7 denotes hyrogen, linear or branched alkyl of up to 8 carbon atoms, alkoxyalkyl of up to 6 carbon atoms or dialkoxyalkyl of up to 8 carbon atoms, and R.sup.6 and R.sup.7 may together form a methylene chain of 4 or 5 carbon atoms. The compounds are antagonistic agents and, as such, increase the tolerance of herbicidal acetanilides by crop plants. Herbicidal agents containing the tetrahydro-1,3-oxazines in combination with haloacetanilides are suitable for combating unwanted plant growth in Indian corn and cereal crops.

Tetrahydro-1,3-oxazines

Growing community of inventors

Roedersheim-Gronau, Germany

Hans J Pander