(1-(2,2-DIFLUOROETHYL)-1H-PYRAZOL-4-YL)BORONIC ACID PINACOL ESTER - Names and Identifiers
Name | 1-(2,2-difluoroethyl)-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole
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Synonyms | 1-(2,2-Difluoroethyl)pyrazole-4-boronic Acid Pinacol Ester (1-(2,2-DIFLUOROETHYL)-1H-PYRAZOL-4-YL)BORONIC ACID PINACOL ESTER 1-(2,2-difluoroethyl)-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole 1-(2,2-difluoroethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole 1H-Pyrazole, 1-(2,2-difluoroethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-
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CAS | 1049730-40-6
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(1-(2,2-DIFLUOROETHYL)-1H-PYRAZOL-4-YL)BORONIC ACID PINACOL ESTER - Physico-chemical Properties
Molecular Formula | C11H17BF2N2O2
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Molar Mass | 258.0726864 |
Density | 1.17±0.1 g/cm3(Predicted) |
Boling Point | 333.0±42.0 °C(Predicted) |
pKa | 1.45±0.10(Predicted) |
Storage Condition | under inert gas (nitrogen or Argon) at 2-8°C |
(1-(2,2-DIFLUOROETHYL)-1H-PYRAZOL-4-YL)BORONIC ACID PINACOL ESTER - Upstream Downstream Industry
(1-(2,2-DIFLUOROETHYL)-1H-PYRAZOL-4-YL)BORONIC ACID PINACOL ESTER - Introduction
1-(2,2-difluoroethyl)-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole is an organic compound with the chemical formula C13H18BF2N3O2.
The compound has the following properties:
-Appearance: colorless crystal or powder solid;
-Melting Point: about 68-70 ℃;
-Solubility: Slightly soluble in some organic solvents, such as ethanol, dimethylformamide and dichloromethane, but almost insoluble in water;
-Stability: Stable under regular conditions, but avoid contact with strong oxidants and strong acids.
The main uses of 1-(2,2-difluoroethyl)-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole include:
-as reagents and intermediates in organic synthesis;
-for pharmaceutical research and pesticide synthesis;
-For the preparation of organic photoelectric materials and functional molecules.
The method of preparing 1-(2,2-difluoroethyl)-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole is generally through the following steps:
1. Reaction of 4-(chloromethyl)-1,3, 2-dioxaborolane with 1-(2,2-difluoroethyl)-1H-pyrazole, formation of 1-(2,2-difluoroethyl)-4-(chloromethyl)-1H-pyrazole;
2. Reaction with tetramethylstannous (IV) fluoride in the presence of a base and tetramethylbenzyl diphosphate gives 1-(2,2-difluoroethyl)-4-(tetramethyl -1,3, 2-dioxaborol-pentan-2-yl)-1H-pyrazole;
3.1-(2,2-difluoroethyl)-4-(tetramethyl -1,3, 2-dioxaborentan-2-yl) the-LH-pyrazole is reacted with a boronic acid or Boronic ester to give the desired product.
For safety information on this compound, consult the supplier or refer to the relevant chemical literature. During handling and handling, the laboratory's safe practices should be observed, including wearing appropriate personal protective equipment (such as gloves, glasses, laboratory coats, etc.), avoiding inhalation, contact with skin and eyes, make sure to do it with good ventilation.
Last Update:2024-04-09 19:05:54