40843-25-2

Basic information

• Product Name: Diclofop
• Synonyms: 2-(4-(2,4-dichlorophenoxy)phenoxy)-propanoicaci;dichlorfopacid;2-(4-(2,4-dichlorophenoxy)phenoxy)propanoic acid;hoe-021079;DICLOFOP;DICLOFOP ACID;diclofop (bsi,iso,ansi,wssa);Diclofop (free acid)
• CAS NO: 40843-25-2
• Molecular Formula: C₁₅H₁₂Cl₂O₄
• Molecular Weight: 327.16
• EINECS: 257-141-8
• Mol File: 40843-25-2.mol

Chemical Properties

• Melting Point: 107°C
• Boiling Point: 440.5 °C at 760 mmHg
• Flash Point: 220.2 °C
• Appearance: White powder.
• Density: 1.386 g/cm³
• Vapor Pressure: 1.54E-08mmHg at 25°C
• Refractive Index: 1.593
• Storage Temp.: -20°C Freezer
• Solubility: DMSO (Slightly), Methanol (Slightly)
• PKA: 3.19±0.10(Predicted)
• BRN: 2338390
• CAS DataBase Reference: Diclofop(CAS DataBase Reference)
• NIST Chemistry Reference: Diclofop(40843-25-2)
• EPA Substance Registry System: Diclofop(40843-25-2)

Safety Data

• Hazard Codes: Xn
• Statements: 36/37/38-22
• Safety Statements: 26-36/37/39
• RIDADR: UN3077(solid)
• WGK Germany: 3
• Hazardous Substances Data: 40843-25-2(Hazardous Substances Data)

Usage

Uses

(±)-Diclofop is an Acetyl-CoA carboxylase (ACCase) inhibiting herbicide.

Trade name

HOE-021079

InChI:InChI=1/C15H12Cl2O4/c1-9(15(18)19)20-11-3-5-12(6-4-11)21-14-7-2-10(16)8-13(14)17/h2-9H,1H3,(H,18,19)

Upstream product

• 51338-27-3 diclofop-methyl 
• 40843-73-0 4-(2',4'-dichlorophenoxy)-phenol 
• 17639-93-9 2-chloro-propionic acid methyl ester 

Downstream Products

• 65633-77-4 2-[4-(2,4-Dichloro-phenoxy)-phenoxy]-propionic acid 2-dimethylamino-ethyl ester 
• 65633-72-9 2-[4-(2,4-Dichloro-phenoxy)-phenoxy]-propionic acid p-tolyl ester 
• 65633-61-6 2-[4-(2,4-Dichloro-phenoxy)-phenoxy]-propionic acid 2-phenoxy-ethyl ester 
• 65633-43-4 2-[4-(2,4-Dichloro-phenoxy)-phenoxy]-propionic acid cyclohex-2-enyl ester 
• 65633-90-1 2-[4-(2,4-Dichloro-phenoxy)-phenoxy]-propionic acid 1,1-dimethyl-2-oxo-propyl ester 
• 65633-96-7 2-[4-(2,4-Dichloro-phenoxy)-phenoxy]-propionic acid 2-[2-(2-methoxy-ethoxy)-ethoxy]-ethyl ester 
• 65633-27-4 2-[4-(2,4-Dichloro-phenoxy)-phenoxy]-propionic acid 2,3-dibromo-propyl ester 
• 66497-51-6 2-[4-(2,4-Dichloro-phenoxy)-phenoxy]-propionic acid 1-methoxycarbonyl-ethyl ester 
• 65633-97-8 2-[4-(2,4-Dichloro-phenoxy)-phenoxy]-propionic acid 2-bromo-propyl ester 
• 65633-28-5 2-[4-(2,4-Dichloro-phenoxy)-phenoxy]-propionic acid 4-chloro-butyl ester 
• 65633-87-6 2-[4-(2,4-Dichloro-phenoxy)-phenoxy]-propionic acid 2-butoxy-ethyl ester 
• 65633-30-9 2-[4-(2,4-Dichloro-phenoxy)-phenoxy]-propionic acid 2,2,2-trifluoro-ethyl ester 
• 65633-95-6 2-[4-(2,4-Dichloro-phenoxy)-phenoxy]-propionic acid 2-(2-ethoxy-ethoxy)-ethyl ester 
• 65633-31-0 2-[4-(2,4-Dichloro-phenoxy)-phenoxy]-propionic acid 2,2,3,3-tetrafluoro-propyl ester 

Relevant articles and documents

HERBICIDAL COMPOSITIONS

The present invention provides compositions comprising herbicidally active compounds (A) and (B), where (A) represents one or more compounds of the general formula (I) or agrochemically compatible salts thereof [component (A)], and (B) represents one or more herbicides [component (B)]. The application further relates to a method and to the use of the herbicidal composition according to the invention for controlling harmful plants or for regulating growth.

Enantioselective degradation of diclofop-methyl in cole (Brassica chinensis L.)

The stereoselective degradation of the racemic diclofop-methyl and its chiral degradation product, diclofop (the hydrolysate of diclofop-methyl), in cole has been investigated. Both enantiomers of diclofop-methyl and diclofop were extracted by organic solvent and detected by chiral high-performance liquid chromatography-diode array detector (DAD). Cellulose-tris-(3,5-dimethylphenylcarbamate)-based chiral column was used for the chiral separation of the four enantiomers applying a mixture of n-hexane and 2-propanol (98:2) concluding 0.1% TFA as mobile phase at a flow rate of 1.0 mL/min. The assay method was linear over a range of concentrations (0.5-250 mg L-1), and the mean recovery was more than 60% for all the enantiomers. The limit of detection for all the enantiomers was 0.2 μg g-1 in plant. Racemic diclofop-methyl was foliar sprayed to cole. Stereoselective behaviour was observed in the diclofop-methyl degradation process. The (S)-diclofop-methyl dissipated faster than (R)-diclofop-methyl. In the case of diclofop, the generation and degradation rates of (S)-enantiomer were higher than (R)-enantiomer in the plant.

Process for the preparation of (phenoxy- or benzyl-)-phenoxypropionic acids and their alkali metal salts

Process for the preparation of (phenoxy- or benzyl-)-phenoxypropionic acids and the alkali metal salts thereof by adding a double molar amount of an aqueous alkali hydroxide to a boiling mixture of a (benzyl- or phenoxy-)-phenol and 2-chloropropionic acid

Substituted diphenyl ethers

A compound of the formula: STR1 and salts and esters thereof, useful as intermediates for the preparation of compounds of the formula STR2 wherein R1 is an alkyl group optionally substituted by one or more fluorine atoms or by an optionally substituted phenyl group R2 is No2 or Cl and R6 is a hydrogen atom or an alkyl group of 1 to 4 carbon atoms.

Process for the preparation of phenoxypropionic acids and their alkali metal salts

Process for the preparation of (phenoxy- or benzyl-)-phenoxypropionic acids by simultaneous addition of 2-chloropropionic acid (ester) and the double molar amount of an aqueous alkali hydroxide to a solution of a phenoxyphenol or benzylphenol in a solvent forming an azeotropic mixture with water, while continuously distilling off the water formed or introduced.

Synthesis and Herbicidal Activity of the D- and L-Methyl 2--propionate Enantiomers

The D- and L-enantiomers of the wild oat herbicide diclofop-methyl (title compound) were prepared utilizing resolution operations and by synthetic routes with optically active compounds as starting material.The dextro-rotatory product which the D(R)-configuration can be attributed to, was found to be the herbicidally active species. - Keywords: Phenoxy-phenoxy-propionic Acid Ester, Diclofop-methyl, Stereoisomers, Grass Herbicide