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CAS No. : | 847818-70-6 | MDL No. : | MFCD09864188 |
Formula : | C11H19BN2O2 | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | UGCRHVPUHAXAAE-UHFFFAOYSA-N |
M.W : | 222.09 | Pubchem ID : | 11379045 |
Synonyms : |
|
Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | |
Hazard Statements: | H315-H319-H335 | Packing Group: | |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
13.16% | With caesium carbonate; In N,N-dimethyl-formamide; at 100℃; for 3h; | To a solution of 4-(4,4,5,5-tetramethyl-l,3,2-dioxaborolan-2-yl)-lH-pyrazole (5.0 g, 25.8 mmol) in Nu,Nu-Dimethylformamide (DMF) (50 mL) and was added Cs2C03 (16.79 g, 51.5 mmol) at RT and 2,2,2-trifluoroethyl trifluoromethanesulfonate (4.45 mL, 30.9 mmol) added drop wise at RT.The reaction mixture was stirred at 100 C for 3 hr. The reaction mixture was diluted with water(100 mL) and extracted with EtOAc (2 X 100 mL), the combined organics were washed with cold water(3 X 100ml) and brine solution (100ml) and dried over Na2S04,filtered and evaporated under vacuo to get 4-(4,4,5,5-tetramethyl- l,3,2-dioxaborolan-2-yl)-l-(2,2,2-trifluoroethyl)-lH-pyrazole (1.8 g, 3.39 mmol, 13.16 % yield) as an off white gummy liquid |
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