Ciba-geigy Corporation

Rudolf Aebi

Christian Vogel

Adolf Hubele

Jurg Speich

The 2R,4S-isomer of formula I and the 2RS,4S-diastereoisomeric mixture of formula Ia of 1-[2-(2,4-dichlorophenyl)-4-n-propyl-1,3-dioxolan-2-ylmethyl)-1H-1,2,4-tri azole ##STR1## and the preparation thereof are described. The compounds of formulae I and Ia have pronounced microbicidal activity without having phytotoxic side-effects. They are used as active ingredients in microbicidal compositions, especially as seed dressings.

Method of controlling or preventing phytopathogenic microorganism

The 2R,4S-isomer of formula I and the 2RS,4S-diastereoisomeric mixture of formula Ia of 1-[2-(2,4-dichlorophenyl)-4-n-propyl-1,3-dioxolan-2-ylmethyl]-1H-1,2,4-tri azole ##STR1## and the preparation thereof are described. The compounds of formulae I and Ia have pronounced microbicidal activity without having phytotoxic side-effects. They are used as active ingredients in microbicidal compositions, especially as seed dressings.

Preparation of the diastereomeric mixture

2-Chloro-N-(2'-methoxypropyl)- and 2-chloro-N-(2'ethoxypropyl)-2',6'-dimethyl-acetanilide are very effective agents for combating weeds and for regulating plant growth with improved stability in the soil.

2-Chloro-N-(2'-methoxypropyl)- and

2,6-diethyl-N-(1'-methoxyprop-2'-yl)[N]-chloroacetanilide is disclosed as plant growth regulating and herbicidal agent with improved stability in the soil.

Herbicidal and plant growth inhibiting agent

2-Chloro-2',6'-dimethyl-N-(2-methoxyethyl)-acetanilide is disclosed as plant growth regulating agent with long lasting activity.

Plant growth regulating agent

2-Ethyl-6-methyl-N-(1'-ethoxyprop-2'-yl)-N-chloroacetanilide is disclosed as plant growth regulating and herbicidal agent with improved stability in the soil.

2,6-DIETHYL-N-(2'-propoxyethyl)-chloroacetanilide is an outstanding selective herbicide for combating weeds in rice cultures.

2,6-Diethyl-n-(2'-N-propoxyethyl)-chloroacetanilide for selectively

2-CHLORO-2',6'-DIMETHYL-N-(1-ethoxyprop-2-yl)-acetanilide is disclosed as plant growth regulating and herbicidal agent with improved stability in the soil.

Acetanilide plant growth regulating agent

N-(2'-alkoxy-ethyl)-N-chloroacetyl-2,3,6-trimethyl-anilines wherein the alkoxy residue is methoxy, ethoxy or isopropoxy are effective weedkillers in plant crops, such as soya and cotton. They may also be used for retarding plant growth.

Plant growth regulation with

2-ETHYL-6-METHYL-N-(1'-methoxyprop-2'-yl)-N-chloroacetanilide is disclosed as plant growth regulating and herbicidal agent with improved stability in the soil.

2-ethyl-6-methyl-N-(1'-methoxyprop-2'-yl)-N-chloroacetanilide is disclosed as plant growth regulating and herbicidal agent with improved stability in the soil.

Growing community of inventors

Basel, Switzerland

Rudolf Aebi