SU137339A1 - The method of producing dibutoxydimethylene sulfide - Google Patents

Description

Kostochkovyd1 crops strong (damage causes bone fruit or tl.

It is known that for control of aphids, contact dy have been widely used: anabasine sulfate, peretrum, DDT, HCCH and thiophos.

A method for the preparation of dibutoxmethyl methylenesulide by the interaction of a-chloromethylbutyl ether with sodium sulphide in an inert solvent of 5 ° C and the use of the obtained product as an active agent, its onset of an agricultural pre-chemical.

The interaction of gx-chloromethyl alkyl ethers with sodium sulfide is not described in the literature.

It is also unknown that the use of dbutoxydimethylenesulfide as the effective principle of the agricultural dokhimikat.

The method of production is simple and is based on sufficient and cheap raw materials. The technique of preparing the working solution is not complicated, and the latter does not delaminate upon prolonged standing.

The synthesis of dibutoxydimethylene sulfide is carried out in a flask with a mechanical stirrer, a reflux condenser, an addition funnel and a thermometer.

The reaction proceeds according to the scheme:

С4Н, ОН, С1, лт „with CJisOCH. S 4-

s; n "osn: c1 + s, n" osn, / +

Example. 46 g, previously dried for three days in a vacuum of HagCa! And 60 ml of dry ether, are placed in a flask. The mixture is cooled to - {- 5 ° and through the addition funnel, with continuous stirring, 61.2 a of freshly distilled a-chloromethyl butyl ether, prepared according to Wedecine (weight 36, 1384, 1903), is fed during one hour.

The temperature of the reaction mixture all the time support - {- 5 °.

After adding the total amount of ether, the mixture is stirred for 2 hours at 15-20 °. The liquid is separated from NaCl, washed with a 5% Na2CO3 aqueous solution and twice with water, then dried over Na2SO4.

l 137339:.-2-

After distilling off the solvent, the reaction product in the amount of 47 g is subjected to vacuum distillation, thus obtaining the following fractions; with t. kip. 39-70 ° at 30 lsh -2 g; 70-74 ° at 30 g. And -6 g; 77-85 ° at 30 mm - 1 g; 110-111 ° with 4-5 ls -30,8 g

Balance 6 g.

The fourth fraction is α-dibutoxydimethyl uranesulfide I: it has the following co-factors: m.p. 110-111 ° with 4-5 mm; &0.9429; MR found 59.57; MR calculated for CioH2202 59.69, D MR 0.12 ;;

Ex 1.4572.

Elementary composition:

Found: C 58.04%; H 10.89%; S 15.2%.

Calculated: C 58.24%; H 10.67%; S 15.53%.

The yield of the target product is 60% on a-chloro ether.

The resulting product is a colorless, thin liquid with an unpleasant odor.

The drug, proposed as a contact chemical, is prepared in the ratio of 80% dibutoxydimethylene sulfide and 20% OD 10.

Such a formulation of the preparation, when mixed with water, gives a non-layering emulsion, which represents the working solution of the proposed dohimicate.

The toxic property of the drug was tested in plum and stem peach tl by the Institute of Agriculture of the Academy of Agricultural Sciences of the Azerbaijan SSR, and it was found that the drug, at a 1% concentration of active principle, causes 100% death of these pests in the working solution.

Subject invention

Claims (2)

1. A method for producing dibutoxydimethylene sulfide, characterized in that chloromethyl butyl ether is reacted with an alkali metal sulfide. 2. The use of the preparation according to claim 1 as the active principle of an agricultural chemical.