Monohydrate complex of cobalt chloride n-oxide 2 - methylpyridine having the property to increase the productivity of peas

 

(57) Abstract:

The invention relates to the derivatives of alkylpyridine, in particular, to the monohydrate complex of cobalt chloride N-oxide 2-methylpyridine gross formulas Derived new chemical compound in ethanol at 25 - 78oC. the Yield was 98%, melting point 251 - 252oC. Found, %: C 27,7; H 3,5; N 5,4; Cl 27,3; C6H9NO2Cl2Co. Calculated, %: C To 28.05; N. Of 3.53; N The 5.45; Cl 27,60. The compound obtained in contrast to the best data analogues increases the overall acetylprocainamide activity of root nodules of peas, a lot of plants, number of beans per plant, grain yield generally at 14, 32, 59 and 37%, respectively.

The invention relates to a derivative of pyridine, namely to the new complex monohydrate complex of cobalt chloride N-oxide 2-methylpyridine gross formula:

,

having the property of plant growth regulator (improving the productivity of peas).

This property implies the possibility of its use in agriculture.

The expected compound are not described in literature. Data about the use of promising plant growth regulators to improve symbiotic nitrogen fixation is not.

2. Salt, N-oxide, 2,6-dimethylpyridine and Pikalyovo acid - analogue II, recommended to increase the productivity of vegetable crops [2]. Similar II on its biological activity yields the claimed connection. Despite the fact that when using concentrations of 10 and 25 mg/l analog II, azetiltsisteina activity peas was higher than the control and the lowest concentrations of the inventive compounds, however, the weight of plant, number of pods on 1 plant and harvest was lower than the use of the claimed compounds (table.1).

3. Salt N-akisi,6-timetype is on its biological activity yields the claimed connection. When using this connection azetiltsisteina activity of pea plants was lower than when using the claimed 20%. Weight of plant, number of pods on rastenii and grain yield when using analogue III yielded the claimed connection, 26,31 and 44 percent, respectively.

The objective of the invention is the synthesis of new highly efficient and environmentally friendly plant growth regulator, which has high biological activity and low toxicity for warm-blooded.

This object is achieved by the synthesis of previously unknown complex monohydrate complex of cobalt chloride N-oxide of 2-methylpyridine. The proposed connection is produced by interaction of the N-oxide 2-methylpyridine with cobalt chloride in ethanol at 15-78oC. the Compound is well soluble in water, stable during storage, non-hygroscopic and vzravobezopasna. The structure of the proposed compound is confirmed by elemental analysis and IR spectra taken on spectrophotometer SPECORD M-80. The presence of absorption bands in the spectra of the claimed compounds at 1205 cm-1(N-O); ; 850 cm-1(-NO); 1610 cm-1(C-C) evidence in favor of this structure.

Example 1. Spolaore capacity of 1 l, equipped with reflux condenser, addition funnel and mechanical stirrer, dissolve 109 g (1 mol.) N-oxides of 2-methylpyridine in 280 ml of ethanol. The solution with thorough stirring and at a temperature of 15-20oC adds solution 237,9 g (1 mol.) setevogo of cobalt chloride in 350 ml of ethanol. The reaction mass is maintained at room temperature for 30 minutes, then boil for 20 minutes, the Solvent is evaporated. Output monohydrate complex of cobalt chloride N-oxide 2-methylpyridine 251,8 g (98%), melting point 251-252oC. Found, %: C 27,7; H 3,5; N 5,4; Cl 27,3; C6H9NO2Cl2Co. Calculated, %: C To 28.5; H 3,53; N The 5.45; Cl 27,60.

Example 2. The effect on the efficiency of symbiotic nitrogen fixation and productivity of pea plants.

Venue experience - experimental field of the Institute of plant physiology and genetics, Academy of Sciences of Ukraine. The object of the research - pea varieties Emerald. The methodology of the experiment: seeds before sowing peas were soaked in the solution of the studied drugs and inoculable nodule bacteria rizotorfina). The concentration of each drug was 10, 25 and 50 mg/l as control for soaking isotropin used water. The flow of the suspension 10 liters per 1 ton of seeds. Square Delano is than used analogues I, II, III. All studied parameters, including activity, weight 1 plant (g), number of beans per 1 plants (units), grain yield is significantly higher than when using analogs I, II, III. Gain control ranges from 26 to 50%.

Example 3. Determination of acute toxicity of drugs. Acute toxicity of the compounds was determined on white mice - males and females weighing 19-21 g oral method of administration of aqueous solutions. As indicators of the toxicity of the value LD50- sredneseriynoe dose expressed in mg/kg weight of the animal. The account of the death of the animals was carried out 24 h after the injection. The results of the experiments were statistically processed according to the method of Litchfield and Wilcoxon signed in the modification of the Company [4].

It is established that the proposed connection to the group of low-toxic compounds - value LD50it is 1260 mg/kg

Technical and economic efficiency of the proposed solution consists in the following:

synthesized a new substance with properties of plant growth regulator, with a higher stimulatory activity than that of counterparts;

the proposed connection provides increased productivity of peas by 50% in comparison with controler">

Monohydrate complex of cobalt chloride N-oxide 2-methylpyridine gross formula

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the resulting interaction setevogo of cobalt chloride N-oxide of 2-methylpyridine in equimolar ratio in an environment of solvent, followed by separation of the target product that has the property to increase the productivity of peas.

 

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