170981-41-6

Basic information

• Product Name: 2,3-Difluoro-4-methoxyphenylboronic acid
• Synonyms: 2,3-Difluoroanisylboronic acid;4-Borono-2,3-difluoroanisole;2,3-Difluoro-4-methoxyphenylboronic aicd;2,3-Difluoro-4-methoxyphenylboronic Acid (contains varying amounts of Anhydride);B-(2,3-Difluoro-4-methoxyphenyl)boronic acid
• CAS NO: 170981-41-6
• Molecular Formula: C7H7BF2O3
• Molecular Weight: 187.94
• Product Categories: blocks;BoronicAcids;FluoroCompounds;Fluorinated;Aryl;Organoborons
• Mol File: 170981-41-6.mol
• Article Data: 4

Chemical Properties

• Boiling Point: 304.335 °C at 760 mmHg
• Flash Point: 137.857 °C
• Appearance: /
• Density: 1.351 g/cm³
• Vapor Pressure: 0.000386mmHg at 25°C
• Refractive Index: 1.485
• Storage Temp.: Keep in dark place,Sealed in dry,Room Temperature
• PKA: 7.67±0.58(Predicted)
• CAS DataBase Reference: 2,3-Difluoro-4-methoxyphenylboronic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 2,3-Difluoro-4-methoxyphenylboronic acid(170981-41-6)
• EPA Substance Registry System: 2,3-Difluoro-4-methoxyphenylboronic acid(170981-41-6)

Safety Data

• HazardClass: IRRITANT
• Hazardous Substances Data: 170981-41-6(Hazardous Substances Data)

Usage

Uses

suzuki reaction

InChI:InChI=1/C7H7BF2O3/c1-13-5-3-2-4(8(11)12)6(9)7(5)10/h2-3,11-12H,1H3

Upstream product

• 7647-01-0 hydrogenchloride 
• 121-43-7 Trimethyl borate 
• 134364-69-5 2.3-difluoroanisole 
• 144292-32-0 2,3-difluoro-4-bromophenol 
• 406482-22-2 1-bromo-2,3-difluoro-4-methoxybenzene 

Downstream Products

• 1609259-84-8 4-(4,6-dimethylpyrimidin-5-yl)-2,3-difluorophenol 
• 1552321-41-1 C₂₄H₂₃F₂N₃O₃S 
• 1599434-70-4 C₂₃H₂₀F₃N₃O₅S 
• 1552321-46-6 C₂₄H₂₃F₂N₃O₅S 
• 1442664-50-7 C₁₇H₁₅F₂NO₄ 
• 1438434-89-9 C₁₇H₁₄F₂N₆O₂ 
• 1394034-08-2 4-(azetidin-1-yl)-5-[5-(2,3-difluoro-4-methoxyphenyl)-1-methyl-1H-pyrazol-4-yl]-7-methylimidazo[5,1-f][1,2,4]triazine 

Relevant articles and documents

Synthesis process of 2, 3-difluoro-4-alkoxy phenol

The invention discloses a synthesis process of 2, 3-difluoro-4-alkoxy phenol, and belongs to the technical field of organic synthesis. The process comprises the following steps: using 2, 3-difluorophenylalkyl ether as a raw material, carrying out lithiation by use of n-butyllithium under an ultralow temperature condition, reacting with boric acid ester, adding an alkali for quenching to obtain 2,3-difluoro-4-alkoxy benzene borate, oxidizing in the presence of hydrogen peroxide, and performing acidolysis to obtain 2, 3-difluoro-4-alkoxy phenol, so that the purity of the purified product can reach more than 99.95 %, the impurity content is less than 50ppm, and the requirements of electronic-grade products are met. Boric acid and the alkali can form salt, the salt is dissolved in water and subjected to a homogeneous reaction for an oxidation reaction during oxidation in the presence of the hydrogen peroxide, the reaction conditions are mild, impurities are few, the product purity is high, the solvent can be recycled, and industrial production is easy to achieve.

The compound, composition, and display device

PROBLEM TO BE SOLVED: To provide a compound capable of elevating an upper limit temperature where a SmC (smectic-C) phase of a liquid crystal can exist, broadening a temperature width of the SmC phase or enlarging a tilt angle of the SmC phase, and to provide a liquid crystal composition comprising the compound and a display element including the liquid crystal composition.SOLUTION: [1] The compound is expressed by general formula (i) shown below. In general formula (i), R and R' each independently represent a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 9 carbon atoms; A1, A2 and A3 each independently represent a 1,4-phenylene group or a 2,3-difluoro-1,4-phenylene group; m represents an integer of 1 to 10; and Y represents a cyclohexylene group, a phenylene group, a bicyclooctylene group or a dialkylsilylene group.