Hermann Bieringer

Synthese und herbizide Wirksamkeit der D- und L-Enantiomeren des 2- [4-(2.4-Dichlorphenoxy)-phenoxy] -propionsäure-methylesters / Synthesis and Herbicidal Activity of the D- and L-Methyl 2-[4-(2,4-Dichlorophenoxy)-phenoxy]-propionate Enantiomers

The D- and L-enantiomers of the wild oat herbicide diclofop-methyl (title compound) were prepared utilizing resolution operations and by synthetic routes with optically active compounds as starting material. The dextro-rotatory product which the D(R)-configuration can be attributed to, was found to be the herbicidally active species.

Synthese und herbizide Wirkung von substituierten Phenoxymethylphenoxypropionsäurederivaten/ Synthesis and Herbicidal Effect of Substituted Phenoxymethylphenoxypropionic Acid Derivatives

Abstract Compounds are herbicides with high activity. Methods for synthesis are reported.

Nitrodiphenylether, ihre Herstellung und herbizide Wirkung / Nitrodiphenylethers, their Preparation and Herbicidal Activity

Nitrodiphenylethers are new herbicides with high activity. Methods for the synthesis of these compounds are reviewed