511540-64-0

Basic information

• Product Name: 5-((4-BroMo-2,6-difluorophenyl)difluoroMethoxy)-1,2,3-trifluorobenzene
• Synonyms: 5-((4-BroMo-2,6-difluorophenyl)difluoroMethoxy)-1,2,3-trifluorobenzene;5-bromo-2-(difluoro(3,4,5-trifluorophenoxy)methyl)-1,3-difluorobenzene
• CAS NO: 511540-64-0
• Molecular Formula: C₁₃H₄BrF₇O
• Molecular Weight: 389.0630824
• EINECS: -0
• Mol File: 511540-64-0.mol
• Article Data: 4

Chemical Properties

• Boiling Point: 334.579 °C at 760 mmHg
• Flash Point: 189.99 °C
• Appearance: /
• Density: 1.744 g/cm³
• Vapor Pressure: 0.000246mmHg at 25°C
• Refractive Index: 1.494
• CAS DataBase Reference: 5-((4-BroMo-2,6-difluorophenyl)difluoroMethoxy)-1,2,3-trifluorobenzene(CAS DataBase Reference)
• NIST Chemistry Reference: 5-((4-BroMo-2,6-difluorophenyl)difluoroMethoxy)-1,2,3-trifluorobenzene(511540-64-0)
• EPA Substance Registry System: 5-((4-BroMo-2,6-difluorophenyl)difluoroMethoxy)-1,2,3-trifluorobenzene(511540-64-0)

Safety Data

• Hazardous Substances Data: 511540-64-0(Hazardous Substances Data)

Usage

Chemical Properties

white powder

Preparation

The preparation of 5-((4-BroMo-2,6-difluorophenyl)difluoroMethoxy)-1,2,3-trifluorobenzene is as follows:Under nitrogen, the three-fluorophenyl 0-3,4,5-2,6-difluoro-4- bromophenyl thioformate 1L 4-neck flask was added 109.0g, 220mLdichloroethane was added to dissolve burning, system is heated to 60 ° C, 30%tetrahydrofuran solution of hydrofluoric acid added to the system 190.0g,250.8g of bromine was slowly dropped to the system, after dropping heatstirring 4h. Thereto was added a saturated sodium bicarbonate solution wasquenched standing layer, the aqueous phase was extracted twice with l00mLdichloroethane, the combined organic phase was washed with water and dried offthe solvent, the crude product 125 · 3g. The crudeproduct is recrystallized from ethanol 250mL white solid 105.1g, detected by GC98.9%, to close It was 95.0%.

InChI:InChI=1/C13H4BrF7O/c14-5-1-7(15)11(8(16)2-5)13(20,21)22-6-3-9(17)12(19)10(18)4-6/h1-4H

Upstream product

• 537013-51-7 4-bromo-2,6-difluorobenzaldehyde 
• 99627-05-1 3,4,5-trifluorophenol 
• 959586-39-1 3,4,5-trifluorophenylchlorothionoformate 
• 461-96-1 3,5-difluorobromobenzene 
• 1401904-42-4 2,2-difluoro-2-(3,4,5-trifluorophenoxy)acetic acid 
• 798555-97-2 ethyl 2,2-difluoro-2-(3,4,5-trifluorophenoxy)acetate 
• 160976-02-3 5-bromo-1,3-difluoro-2-iodo-benzene 

Downstream Products

• 303186-20-1 4-[difluoro-(3,4,5-trifluorophenoxy)methyl]-3,5-difluoro-4'-propylbiphenyl 
• 685563-69-3 {4-[difluoro(3,4,5-trifluorophenoxy)methyl]-3,5-difluorophenyl}boronic acid 

Relevant articles and documents

Method for preparing intermediate for producing difluoromethoxy containing liquid crystal compound

The invention discloses a method for preparing an intermediate compound represented by a formula A shown in the description for producing a difluoromethoxy containing liquid crystal compound. The compound A is prepared by taking 3,4,5-trifluorophenol as an initial raw material. According to the method, the operation is simple and convenient, the cost is low, and the yield is high, so that the method is applicable to industrial production.

oxygen ether bridge bond containing two difluoromethane (CF 2 O) of the method for the preparation of monomer liquid crystal compound

The invention provides a preparation method of a CF2O-contained monomer liquid crystal compound. The preparation method comprises the following steps of (1) with a compound with a structure as shown in the formula I as a raw material, reacting under the catalytic action of a zinc reagent and copper salt and in the existence of a solvent to generate a compound with a structure as shown in the formula II; (2) enabling the compound with the structure as shown in the formula II and a fluorinated reagent to be subjected to fluoridation in the existence of the solvent to generate a compound with a structure as shown in the formula III; (3) enabling the compound with the structure as shown in the formula III and boric acid as shown in the formula IV to be subjected to SUZUKI coupled reaction in the existence of the solvent to obtain the CF2O-contained monomer liquid crystal compound with a structure as shown in the formula V, wherein the CF2O-contained monomer liquid crystal compound with a structure as shown in the formula V is as shown in the specification.