31770-28-2

Upstream product

• 94-82-6 4-(2,4-dichlorophenoxy)butyric acid 
• 120-83-2 2,4-dichlorophenol 

Downstream Products

• 4090-16-8 4-(2,4-Dichloro-phenoxy)-butyric acid 4-cyano-2,6-diiodo-phenyl ester 
• 101119-43-1 4-(2,4-dichloro-phenoxy)-butyric acid-(4-chloro-anilide) 

Relevant academic research and scientific papers

Synthesis and Herbicidal Activity of α-(Substituted Phenoxybutyryloxy or Valeryloxy)alkylphosphonates and 2-(Substituted Phenoxybutyryloxy)alkyl-5,5-dimethyl-1,3,2-dioxaphosphinan-2-one

On the basis of our work on the modification of alkylphosphonates 1, a series of α-(substituted phenoxybutyryloxy or valeryloxy)alkylphosphonates (4-5) and 2-(substituted phenoxybutyryloxy)alkyl-5,5-dimethyl-1,3,2-dioxaphosphinan-2-one (6) were designed and synthesized. The bioassay results indicated that 14 of title compounds 4 exhibited significant postemergence herbicidal activity against velvetleaf, common amaranth, and false daisy at 150 g ai/ha. Compounds 5 were inactive against all tested weeds. Compounds 6 exhibited moderate to good inhibitory effect against the tested dicotyledonous weeds. Structure-activity relationship (SAR) analyses showed that the length of the carbon chain as linking bridge had a great effect on the herbicidal activity. Broad-spectrum tests of compounds 4-1, 4-2, 4-9, 4-30, and 4-36 were carried out at 75 g ai/ha. Especially, 4-1 exhibited 100% inhibition activity against the tested dicotyledonous weeds, which was higher than that of glyphosate.

SUBSTITUTED OXYARENES

The invention relates to compounds of formula (I), wherein A1, A2, R1, R2, R3, R4, R5, and Y have the meaning indicated in the description, methods and intermediate compounds for the production thereof, and the use thereof for controlling pests.