20940-37-8

Usage

InChI:InChI=1/C8H6Cl2O3.C4H11N/c9-5-1-2-7(6(10)3-5)13-4-8(11)12;1-3-5-4-2/h1-3H,4H2,(H,11,12);5H,3-4H2,1-2H3

Upstream product

• 94-11-1 Amchem Weed Killer 650 
• 109-89-7 diethylamine 
• 49566-35-0 isopropyl 2-phenoxyacetate 
• 120-83-2 2,4-dichlorophenol 
• 94-75-7 2,4-Dichlorophenoxyacetic acid 

Relevant academic research and scientific papers

Preparation method of chlorophenoxycarboxamide salt

The invention provides a preparation method of chlorophenoxycarboxamide salt, wherein the preparation method includes the following steps: S1) carrying out 2-site and/or 4-site selective chlorinationreaction of phenoxycarboxylic ester with a chlorinating agent under the action of a catalyst A and a catalyst B to obtain chlorophenoxycarboxylic ester, wherein the catalyst A is Lewis acid, and the catalyst B has the following structural formula of R1'-S-R2'; and S2) carrying out ammonolysis reaction of chlorophenoxycarboxylic ester and amine to obtain chlorophenoxycarboxamide salt. By redesigning of the process route and fine screening of the catalysts and the chlorinating agent, the method reduces energy consumption, improves chlorination selectivity and avoids loss of effective components.The yield of the obtained chlorophenoxycarboxamide salt can reach 98.5% or more. At the same time, the production of high-salt wastewater is completely eradicated, the dust hazard caused by drying and use of chlorophenoxycarboxylic acid is avoided, energy is saved and equipment investment is reduced.

Studies on the synthesis of ammonium salts of 2,4-dichlorophenoxyacetic acid (2,4-D) to enhance its bioregulating potential

Tertiary amines viz. 3-(diethylamino)-2-hydroxypropyl-2-(4-chlorophenoxy) acetate (6a), 3-(diethylamino)-2-hydroxypropyl-2-(2-chlorophenoxy)acetate (6b), (3-N,N-diethylamino-2-hydroxypropyl)-3-(2-nitrophenyl)prop-2-en-1-oate (11a) and (3-N,N-diethylamino-2-hydroxypropyl)-3-(4-chlorophenyl)prop-2-enoate (11b) were prepared through the formation of glycidyl ester. Primary amine (ethanolamine), secondary amines (diethylamine and piperidine) and the synthesized tertiary amines (6a, 6b, 11a and 11b) were reacted with 2,4-dichloroacetic acid (2,4-D) to get secondary (1a), tertiary (1b and 1c) and quaternary (1d-g) ammonium salts. These salts (1a-g) were tested on rice (Oryza sativa, PR-114) for their biological activity. All the tested compounds are found to possess more plant growth retardant activity than that of 2,4-D.

Dialkylammonium-2,4-dichlorophenoxyacetates as plant growth regulators and the method of making same

Various dialkylammonium-2,4-dichlorophenoxyacetates having the formula STR1 wherein R1 and R 2 are radicals each selected from the group consisting of methyl and ethyl, are useful as plant growth regulators. Mono-substituted alkylamines are not suitable for processing into compounds of this invention. The compounds of the invention exhibit excellent water solubility characteristics and possess an exceptionally high and unexpected degree of effectiveness as a general weed killer on lawns, pasture lands, ponds, lakes, canals, ditches, etc. Methods of using and preparing these compounds are disclosed.