156487-12-6

Basic information

• Product Name: 4-Butoxy-2,3-difluorophenylboronic acid
• Synonyms: 4-Butoxy-2,3-difluorophenylboronic acid;2,3-Difluoro-(4-butoxyphenyl)-Boronic acid;B-(4-Butoxy-2,3-difluorophenyl)boronic acid;4-Butoxy-2,3-difluorophenylboronic Acid (contains varying amounts of Anhydride);Boronic acid, (4-butoxy-2,3-difluorophenyl)-
• CAS NO: 156487-12-6
• Molecular Formula: C10H13BF2O3
• Molecular Weight: 230.0162264
• Mol File: 156487-12-6.mol

Chemical Properties

• Boiling Point: 341.7±52.0 °C at 760 mmHg
• Flash Point: 160.4±30.7 °C
• Appearance: /
• Density: 1.2±0.1 g/cm³
• Vapor Pressure: 0.001-0.038Pa at 20-50℃
• Storage Temp.: under inert gas (nitrogen or Argon) at 2-8°C
• Solubility: soluble in Methanol
• PKA: 7.43±0.58(Predicted)
• CAS DataBase Reference: 4-Butoxy-2,3-difluorophenylboronic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 4-Butoxy-2,3-difluorophenylboronic acid(156487-12-6)
• EPA Substance Registry System: 4-Butoxy-2,3-difluorophenylboronic acid(156487-12-6)

Safety Data

• Hazardous Substances Data: 156487-12-6(Hazardous Substances Data)

Usage

Chemical Properties

White powder

Upstream product

• 136239-66-2 2,3-difluorophenyl butyl ether 
• 5419-55-6 Triisopropyl borate 

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.

TRICYCLIC LIQUID CRYSTALLINE COMPOUND HAVING LATERAL FLUORINE, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

The invention provides a liquid crystal compound having stability to heat, light and so forth, a wide temperature range of a nematic phase, a small viscosity, a large optical anisotropy and a suitable elastic constant K33 (K33: bend elastic constant), and further having a suitable and negative dielectric anisotropy and an excellent compatibility with other liquid crystal compounds, and provides a liquid crystal composition having a small viscosity, a large optical anisotropy, a suitable elastic constant K33, a suitable and negative dielectric anisotropy, and further having a low threshold voltage, a high maximum temperature of a nematic phase and a low minimum temperature of the nematic phase. In a specific structure having phenylene in which hydrogen on the benzene ring is replaced by fluorine, a three-ring liquid crystal compound having fluorine at a lateral position, and a liquid crystal composition containing the compound are prepared.