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CAS No. : | 5140-72-7 | MDL No. : | MFCD00181262 |
Formula : | C5H3BrClN | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | JWTZSVLLPKTZJP-UHFFFAOYSA-N |
M.W : | 192.44 | Pubchem ID : | 78820 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H319 | Packing Group: | N/A |
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 |
---|---|---|
71% | 2-Bromo-6-chloropyridine (44.44 g, 231 mmol) was dissolved in dichloromethane (DCM) (770 mL),Stir in a three-necked 2L reaction flask,It was then cooled to -78 C.n-Butyllithium (1M in THF) (106 mL, 266 mmol) was cannulated into the addition funnel and then added dropwise into the reaction while maintaining the temperature below -69 C.The reaction was stirred for 20 minutes.Dihydrofuran-3 (2H) -one (22.86 g, 266 mmol) was dissolved in a minimum amount of DCM and then added dropwise into the reaction.The reaction was slowly warmed to room temperature.After the reaction reaches room temperature,This was quenched with ammonium chloride solution (200 mL) and then the layers were separated.The aqueous layer was extracted with DCM and then the organic layer was washed with brine (200 mL). The organic layer was dried over MgSO4 and then concentrated to dryness. The crude residue was purified by silica gel chromatography eluting with 0% to 100% ethyl acetate in heptane to give the product (33.5 g, 71% yield). |
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