94 results about "Phenoxy acetic acid" patented technology

The invention relates to a method for synthesizing a phenoxyacetic acid derivative. The method comprises the steps of mixing a salt compound of phenol or methyl phenol and a salt compound of chloroacetic acid, putting the mixture in a solvent to carry out a heating reaction, acidifying with an inorganic acid to obtain phenoxyacetic acid, dissolving the phenoxyacetic acid in a solvent, adding a catalyst to the solvent, passing chlorine in the solvent and carrying out a heating chlorination, cooling and crystallizing to obtain a chlorinated phenoxyacetic acid derivative or a methyl phenoxyacetic acid derivative. Compared with a conventional method, the method provided by the invention can recycle the solvent of the reaction system and wastewater for cycle use during the reaction process, can meet self-production balance and realize recycle and reuse of a sealed system, and has a yield higher than 95%, a content larger than 98%, the recycle and reuse utilization rate of the solvent higher than 95% and emission reduction of the waste water in the whole production process higher than 95%.

A process for preparing 2-methyl-4-chloro-sodium phenoxyacetate from O-phenylcresol, chloroacetic acid, sodium hydroxide and chlorine gas includes such steps as neutralizing reaction, etherifying reaction, chlorating reaction and salting reaction. It can be used as herbicide.

The invention discloses a crop growth regulator composition. Effective components of the crop growth regulator composition are acetyl-thiazolidine-4-carboxylic acid and auxin substances, wherein the auxin substance is any one of indoleacetic acid, naphthylacetic acid, indolebutyric acid, p-chlorophenoxyacetic acid and p-iodophenoxyacetic acid; the dosage forms of the crop growth regulator composition are soluble powder, soluble granules, water aqua and ultra-low volume spray. The composition is diluted to 1-2000 mg/kg with water, dipping treatment is conducted in a photinia fraseri seedling stage, fruit dipping treatment is conducted in a kiwifruit young fruit expanding stage, spraying treatment is conducted in a soybean initial flowering stage, and the effects of promoting root system development, promoting fruit enlarging or grain plumpness and increasing the yield are achieved; and moreover, the regulator composition disclosed by the invention is a regulator compound consisting of acetyl-thiazolidine-4-carboxylic acid and auxin substances, so that the number and the root length of crop root systems are increased, the fruit enlarging speed and the fruit weight can be increased, and the regulator composition has the characteristics of the quick effect and the strong activity.

The invention discloses a chlorination method for phenoxyacetic acid, which mainly solves the problems of high cost, low yield, poor selectivity and environment pollution of the existing phenoxyacetic acid prepared with the existing chlorination method for phenoxyacetic acid. The chlorination method comprises the following operation steps of: 1. preparing a phenoxyacetic acid solution; 2. carrying out electrolysis; and 3. purifying. The chlorination method has the advantage of simple step, is convenient to operate, is operated at the room temperature and does not need any catalyst so as to lower preparation cost; in addition, the chlorination method has good selectivity, and methyl 4-chlorophenoxyacetic acid, 2,4-dichlorophenoxy aceticaci and 2,4,6-trichlorophenoxyacetic acid can be prepared respectively under different electrolysis conditions with the respective yield of over 90%; and in the chlorination method, chlorine does not serve as a raw material, thereby causing small environment pollution. The chlorination method is mainly used for preparing methyl 4-chlorophenoxyacetic acid, 2,4-dichlorophenoxy aceticaci and 2,4,6-trichlorophenoxyacetic acid.

The present invention relates to a method for producing an oligonucleic acid derivative characterized by using a phenoxyacetic acid derivative anhydride as an acylating agent and a pyridine derivative as the acylation reaction activator, in a capping step for protecting the 5′-hydroxyl group of a ribose of an oligonucleic acid derivative.

The invention disclose a chemical structure of the 4-(2-Benzothiazolyliminomethyl)phenoxyacetic acid (1) and the copper complex (2) thereof, which is described as chart. The invention also discloses the preparing method of above two composition. The disclosed two composition has a strong antibiosis and mildewproof function, a simple and mature art, a low cost and little waste output which can be used for antibiosis and mildewproof agent in the paper industry.

The invention provides a degrading strain for dimethyltetrachloro (MCPA) of a phenoxyacetic acid herbicide and a microbial agent produced by the degrading strain, wherein the adopted strain is a gramstaining reaction negative strain DCP-6d, the strain is identified as Pigmentiphaga sp., the strain is deposited in the China Center for Type Culture Collection on December 23, 2019, and the preservation number of the strain is CCTCC M 20191085. The degrading strain DCP-6d for the MCPA of the phenoxyacetic acid herbicide can be applied to degradation of the MCPA and 2,4-dichlorphenoxyacetic acid (2,4-D), and is preferentially applied to degradation of the MCPA in soil; and a degrading microbial agent product is directly applied so that the residual quantity of the MCPA in the soil can be decreased by 90% or above, and the pollution problem of the MCPA in the soil is solved.

The invention relates to a medicament for treating hyperlipemia and atherosclerosis. The medicament contains a lipid-regulating active ingredient A and a lipid-regulating active ingredient B, wherein the lipid-regulating active ingredient A is one or more of nicotinic acid, clofibrate, phenoxy acetic acid and HMG-CoA reductase inhibitor, and the lipid-regulating active ingredient B is one kind or more kinds in long-chain fatty alcohol. The invention also relates to the application of the medicament for treating hyperlipemia or treating atherosclerosis. The medicament greatly reduces the dosage of statins with the curative effect not lower than that of the statins which is singly used, thereby reducing the side effect of the statins, reducing the drug cost and saving the drug expense for the patients.

The invention relates to a plant selenium-rich germanium-rich strontium-rich nutrition supplement as well as a preparation method and application thereof. The plant selenium-rich and germanium-rich nutrient supplement is a liquid preparation mainly containing the following components: compound amino acid chelated selenium, sodium octaborate tetrahydrate, organic germanium-132, strontium chloride,glycine betaine, glycine betaine Cab, ammonium heptamolybdate, sodium 4-iodophenoxyacetate and water. The nutrition supplement can significantly improve the ability of rice, rape, tea, wheat and othercrops to absorb and convert selenium element, germanium element and strontium element, significantly improve the selenium content, germanium content and strontium content of the crops, promote earlymaturing and high yield of the crops, promote income increase of farmers, and serve people's health.

The invention discloses a 2,4-dichlorphenoxyacetic acid preparation method which comprises the following special steps: adding chloroacetic acid into a sodium hydroxide solution, stirring, adding into phenol, and regulating the PH value to 11 with sodium bicarbonate; then heating for 40 minutes at 100 DEG C; adding into hydrochloric acid to regulate the PH value to 4; finally cooling in an ice-water bath, and washing and drying the obtained solid to obtain phenoxyacetic acid; adding into the phenoxyacetic acid into an acetic acid and water mixed solution, adding into an Ni-Al-Mg composite oxide, stirring and mixing, wherein the mass of the Ni-Al-Mg composite oxide is 0.05% of that of phenoxyacetic acid; then introducing chlorine to carry out chlorination; reacting for 20-40 minutes, and finishing the chlorination; then cooling the reaction product, and filtering to obtain a solid; at last, drying the solid to obtain the 2,4-dichlorphenoxyacetic acid. The product prepared by the method disclosed by the invention is high in quality, yield and purity; the preparation process is simple, convenient and stable, the industrial cost is low, and the environment is protected.

Compounds having the formula

wherein the symbols have the meaning described in the specification are hydroxamic acid derivatives of phenoxy-acetic acids and analogs capable of inhibiting the lethal effects of infection by anthrax bacteria and are useful in the treatment of poisoning by anthrax.

The invention relates to a method for synthesizing phenoxyacetic acid derivatives. The salt compound of phenol or methylphenol and the salt compound of chloroacetic acid are mixed and placed in a solvent for heating reaction, and then acidified with an inorganic acid to obtain phenoxyacetic acid. Then dissolve it in a solvent and add a catalyst therein, then pass chlorine gas into it and carry out heating and chlorination reaction, and obtain chlorophenoxyacetic acid (or methylphenoxyacetic acid) derivatives after cooling and crystallization. Compared with the prior art, in the reaction process, the present invention recovers and recycles the solvent and waste water of the reaction system, satisfies its own production balance, and can realize the recycling of the closed system, with a yield greater than 95% and a content greater than 98% , The utilization rate of solvent recycling is greater than 95%, and the waste water discharge in the whole production process is reduced by more than 95%.

The invention discloses an application method of a chitosan/glucan-containing moss sporophyte suspension to bare land greening. The application method comprises the following steps of collecting mossspores, and adding a hydrogen peroxide solution into the spores to obtain a mixed solution of disinfected spores and hydrogen peroxide; inoculating the mixed solution of the disinfected spores and thehydrogen peroxide into a spore germination induction culture medium for spore germination induction culture, adding into a solid subculture multiplication culture medium for subculture multiplicationculture after culture, mixing with a liquid culture medium after culture, and carrying out shake culture to obtain a dark green suspension; adding chitosan, glucan, ferric ammonium citrate, phenoxyacetic acid, zinc sulfate and potassium nitrate into the dark green suspension to obtain the moss sporophyte suspension; uniformly smearing a moss adhesive on bare land, then uniformly spraying the mosssporophyte suspension on the surface of the moss adhesive, using a sunshade net for covering, and carrying out spray irrigation in time. The moss sporophyte suspension is used for bare land greening,and the greening covering degree is high after growth.