DE1768296B2 - AETHYL-N-CYCLOHEXYL-N-PROPARGYLTHIOLCARBAMATE - Google Patents

Description

example 1
Ethyl N-cyclohexyl-N-propargyl-thiol carbamate

Amine To a mixture of 14 parts by weight of triethyl "5, 20 parts by weight of N-cyclohexyl-N-propargylamine and 120 weight parts of benzene are added dropwise 18 parts by weight Chlorameisensäurethioäthylester at 70 to 8O ⁰ C. The mixture is kept under reflux conditions for 2 hours, the mixture is decomposed with water, washed with dilute sulfuric acid, dried and distilled, and the end product is thus obtained; Bp. _{O O} i mm = 117 to 119 ^a C (yield: 85% of theory). "

The active ingredient can be used as a solution, emulsion, suspension or dust. The 35 Forms of application depend entirely on the intended use; they should be a fine one in any case Ensure distribution of the active substance.

Hydrocarbons such as tetrahydronaphtha- 40 can be used to produce solutions that can be sprayed directly lin, and alkylated naphthalenes as spray liquids be used.

Aqueous use forms can be made from emulsions. . ,.

sion concentrates, pastes or wettable powders ^e '^

(Wettable powders) can be prepared by adding water 45 A 2 m ² large parcel with a stock of cabbage. To produce emulsions, beets (Brassica oleracea var. Vulgaris), beets (Beta vulgaris), substances as such or in a solvent annual bluegrass (Poa annua), wild oats (Avena dissolved, fatua by means of wetting agents or dispersants in water), chicken millet (Echinochloa crus-galli) or organic solvents are homogenized with 3 kg per hectare of ethyl-N-propargyl-N-cyclohexyl-thioldene. It is also possible to use an active substance, 50 carbamate (I) dispersed in 500 liters of water per hectare of emulsifying or dispersing agent, and possibly soldering. After 3 to 4 weeks it was established that concentrates consisting of solvents were produced so that the grass weeds had almost completely died and were suitable for dilution with water. while cabbage and beets have only a slight

Pigeons can be shown by mixing, or by community inhibition, which later grew out again.

Active ingredient II I. Crops 20 to 30 Corn 10 10 Beets 0 to 10 20 to 30 Cabbage 10 Unwanted plants 90 Annual 90 Bluegrass 100 Wild oats 90 to 100 90 Chicken millet 90 to 100 90 to 100 Green millet 90 to 100 70 to 80 Blood millet 80 0 = no damage 100 = total damage

Claims (2)

1 2 patent claims · grinding the active substances with a solid carrier material can be produced. 1. Ethyl-N-q'dohexyl-K-propargyl-thiolcarb- The biological effect of the new compound amat, results from the following examples. 2. Herbicide containing a solid or liquid 5. gene carrier and ethyl-N-cyclohexyl-N-pro- B e ι s ρ ι e 1 2 pargyl thiol carbamate. Loamy sandy soil was placed in the test pots filled and the seeds of maize (Zea mays), beets (Beta vulgaris), cabbage (Brassica oleracea var. Vulgaris), ίο annual bluegrass (Poa annua), flying oats (Avena fatua), chicken millet (Echinochloa crus-galli), green The present invention relates to the new connecting millet (Seraria viridis), blood millet (Digitaria Ethyl-N-cyclohexyl-N-propargyl-thiolcarbamate sanguinalis) sown and the soil prepared in this way and herbicides containing them. with ethyl N-propargyl-N-cyclohexylthiol carbamate (I) It is known, ethyl-N-ethyl-N-cyclohexyl-thiol- 15 and in comparison with ethyl-N-ethyl-N-cyclohexylthiol carbamate to be used as a herbicide (US patent carbamate (II) treated. The application rates are labeled 31 85 720; GB Patent Specification 9 95 316). each carried 3 kg of active ingredient per hectare and were dispersed It has now been found that the new compound yaws in 500 liters of water per hectare. After 4 to 5 weeks Ethyl-N-cyclohexyl-N-propargyl-thiolcarbamate was found to be a better plant tolerant possesses herbicidal properties. Ao possibility on maize and cabbage showed as II.