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A kind of pyridine ethoxy coumarin plant growth regulator

A plant growth regulator, pyridine ethoxy technology, applied in the direction of plant growth regulators, plant growth regulators, biocides, etc., can solve the problems of undisclosed activity, etc., to achieve increased germination rate, superior comprehensive performance, leaves dark green effect

Active Publication Date: 2019-03-29
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, a kind of pyridine ethoxy coumarin plant growth regulator as described in the present invention and its activity have not been disclosed

Method used

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  • A kind of pyridine ethoxy coumarin plant growth regulator
  • A kind of pyridine ethoxy coumarin plant growth regulator
  • A kind of pyridine ethoxy coumarin plant growth regulator

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] Example 1, the synthesis of formula I compound

[0019] (1) Synthesis of formula II compound:

[0020]

[0021] Add 12.3g (0.1mol) of 2-pyridine ethanol and 150mL of ethyl acetate in sequence to a 250mL three-necked flask, and simultaneously add 11.1g (0.1mol) of triethylamine as an acid-binding agent, and dropwise add 13.7g (0.12 mol) methanesulfonyl chloride, reacted in ice-water bath for 5h. The completion of the reaction was monitored by thin-layer chromatography, washed with water three times, the organic layer was separated, dried with anhydrous sodium sulfate, and rotary evaporated to obtain 16.5 g of light yellow oily liquid with a yield of 82.0%.

[0022] (2) Synthesis of formula I compound:

[0023]

[0024] In the 250mL there-necked flask, add 16.2g (0.1mol) tetrahydroxycoumarin successively, 150mL toluene, 16.6g (0.12mol) potassium carbonate powder, add dropwise the mixed solution of 24.1g (0.12mol) formula II compound and toluene, drop After comple...

example 2、10

[0027] The preparation of example 2,10% formula I compound suspending agent:

[0028] Take by weighing 15g formula I compound, 2g sodium lignosulfonate, 3g polycarboxylate dispersant Sokalan CP 5 (maleic acid-acrylic acid sodium salt), 1g organosilicon milk defoamer (THIX-108 water-based silicon emulsification defoamer foaming agent), 2g magnesium aluminum silicate and 5g ethylene glycol in a 250mL beaker, add 77g water, stir evenly, grind with a sand mill for 2 hours, the speed is 3000 rpm, and the particle size is 3-5μm, and white fluidity is obtained. suspending agent.

[0029] Bioassay example

example 3

[0030] Example 3, seed germination experiment

[0031] The paper bed germination method was adopted. Formula I compound citrate and DA-6 are formulated into 5% aqueous solution respectively, and dilute with distilled water respectively to the plant growth regulator that concentration is 10 μ g / mL, 20 μ g / mL, 30 μ g / mL, 60 μ g / mL and 120 μ g / mL agent solution. Select wheat seeds with uniform grain size and plumpness, sterilize the seeds with hypochlorous acid solution, soak the seeds in the beaker with the above dilution solution for 8 hours, and repeat 3 times for each treatment of 100 seeds. In the petri dish with double-layer filter paper, keep a certain distance between the seeds. After placing the seeds, put them in a fully intelligent climate box at 25°C for heat preservation and germination treatment. During the period, distilled water should be added regularly to keep the filter paper moist. For the germination situation of the treatment, the length of the germ is abo...

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Abstract

The invention discloses a pyridine ethyoxyl coumarin compound with a structure shown as a formula I, and the pyridine ethyoxyl coumarin compound serves as a plant growth regulator. The compound shown as the formula I has excellent effects of promoting germination and rooting, increasing the yield and improving the quality and can be widely used for increasing the yield or improving the survival rate in agriculture or forestry.

Description

technical field [0001] The invention belongs to the field of plant growth regulators in pesticides, in particular to a pyridine ethoxy coumarin plant growth regulator. Background technique [0002] Plant growth regulators are used in controlling seed germination and dormancy, promoting rooting, promoting cell elongation and division, controlling lateral buds or tillers, controlling plant type, controlling flowering, inducing seedless fruit, thinning flowers and fruit, controlling fruit drop, controlling fruit shape or In the mature stage, it plays a positive role in enhancing stress resistance (disease resistance, drought resistance, salt resistance, frost resistance), increasing nutritional content, improving fruit color and taste, and enhancing the ability to absorb fertilizers. [0003] Plant growth inhibitors inhibit the growth of apical meristems, causing plants to lose apical dominance, with many side branches, small leaves, and reproductive organs are also affected. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D405/12A01N43/40A01P21/00A01P3/00
CPCA01N43/40C07D405/12
Inventor 许良忠张明明胡娆崔建强王明慧
Owner QINGDAO UNIV OF SCI & TECH
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