Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Synthesis of high-purity mepiquat chloride serving as plant growth regulator with one-step method

A technology for plant growth regulators and dibenzylamines, which is applied in the directions of plant growth regulators, plant growth regulators, biocides, etc., can solve the problems of low purity of dibenzylamines, and achieves high purity, simple process operation and economical cost. low effect

Inactive Publication Date: 2012-07-18
INST OF PROCESS ENG CHINESE ACAD OF SCI
View PDF2 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the current one-step synthesis of metropic amine, the problem of low purity of metropic amine, the present invention proposes a synthesis process for one-step synthesis of high-purity metropic amine (purity higher than 98%), because hexahydropyridine and methyl chloride, and the resulting Benzylamines are all soluble in ethanol, and K 2 CO 3 and KHCO 3 insoluble in ethanol

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Synthesis of high-purity mepiquat chloride serving as plant growth regulator with one-step method
  • Synthesis of high-purity mepiquat chloride serving as plant growth regulator with one-step method
  • Synthesis of high-purity mepiquat chloride serving as plant growth regulator with one-step method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Get 0.85kg hexahydropyridine and dissolve in 9.26kg ethanol, add 1.38kg K 2 CO 3 , after stirring at room temperature for 0.5h, add 1.06kg of methyl chloride (5% excess), react at room temperature for 6h; filter the reaction system to obtain KHCO 3 And benzederine ethanol system, KHCO 3 K is obtained by calcination 2 CO 3 , K 2 CO 3 Recycling; 1.47kg of high-purity benzyl amine is obtained by removing ethanol from the ethanol system of benzedral amine, and ethanol can be recycled.

Embodiment 2

[0019] Get 0.85kg hexahydropyridine and dissolve in 9.26kg ethanol, add 1.38kg K 2 CO 3 , after stirring at room temperature for 0.5h, add chloromethane 111kg (excess 10%), react at room temperature for 4.5h; filter the reaction system to obtain KHCO 3 And benzederine ethanol system, KHCO 3 K is obtained by calcination 2 CO 3 , K 2 CO 3 Recycling; 1.48kg of high-purity benzyl amine is obtained by removing ethanol from the ethanol system of benzedral amine, and ethanol can be recycled.

Embodiment 3

[0021] Get 0.85kg hexahydropyridine and dissolve in 9.26kg ethanol, add 1.38kg K 2 CO 3 , after stirring at room temperature for 0.5h, add 1.21kg of methyl chloride (over 20%), react at room temperature for 3h; filter the reaction system to obtain KHCO 3 And benzederine ethanol system, KHCO 3 K is obtained by calcination 2 CO 3 , K 2 CO 3 Recycling; 1.48kg of high-purity benzyl amine is obtained by removing ethanol from the ethanol system of benzedral amine, and ethanol can be recycled.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a synthesis method of mepiquat chloride serving as a plant growth regulator, in particular to a method for synthesizing high-purity mepiquat chloride serving as a plant growth regulator with a one-step method. A process of the method comprises the following steps of: (1) dissolving a certain amount of hexahydropyridine into ethanol, and adding a certain amount of K2CO3; (2) adding methyl chloride into a system, wherein the weight ratio of the methyl chloride to the hexahydropyridine is 2:1-2.2:1; (3) filtering the system reacted in the step (2) to obtain KHCO3 and a mepiquat chloride system respectively, calcining the KHCO3 to obtain K2HCO3, and recycling the K2HCO3; and (4) removing ethanol from the mepiquat chloride system by evaporating to obtain high-purity mepiquat chloride, wherein the ethanol can be recycled. According to the method, high-purity mepiquat chloride can be synthesized with the one-step method, and the used K2CO3 and ethanol can be recycled. The process is easy to operate, is economical, has low cost and high mepiquat chloride purity, and can hopefully become a novel process for synthesizing high-purity mepiquat chloride serving as the plant growth regulator with the one-step method.

Description

technical field [0001] The invention relates to a method for synthesizing a plant growth regulator, especially, the invention relates to a method for synthesizing a high-purity plant growth regulator, a metramine, in one step. Background technique [0002] Mepiquat is a new type of plant growth regulator, which has a good systemic conduction effect on plants. It can promote the reproductive growth of plants, inhibit the crazy growth of stems and leaves, control side branches, shape the ideal plant shape, increase the number and vitality of the root system, increase the weight of the fruit, and improve the quality. Widely used in cotton, wheat, rice, peanuts, corn, potatoes, grapes, vegetables, beans, flowers and other crops. Metramine is a systemic drug with high efficiency, low toxicity and no harm. According to the dosage and different growth stages of plants, spraying mepipebylamine can regulate plant growth, make plants firm and lodging resistant, improve color and inc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C07D211/06A01N43/40A01P21/00
Inventor 高红帅郭晨刘春朝
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com