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CAS No. : | 179898-34-1 | MDL No. : | MFCD04038227 |
Formula : | C7H3BrFN | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | IADLVSLZPQYXIF-UHFFFAOYSA-N |
M.W : | 200.01 | Pubchem ID : | 2783330 |
Synonyms : |
|
Signal Word: | Danger | Class: | 6.1 |
Precautionary Statements: | P501-P261-P270-P271-P264-P280-P337+P313-P305+P351+P338-P361+P364-P332+P313-P301+P310+P330-P302+P352+P312-P304+P340+P311-P403+P233-P405 | UN#: | 3439 |
Hazard Statements: | H301+H311+H331-H315-H319 | Packing Group: | Ⅲ |
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 |
---|---|---|
33% | With potassium acetate; sodium carbonate; In water; ethyl acetate; N,N-dimethyl-formamide; | A mixture of 6-bromo-8-methoxy-4,4-dimethyl-1,4-dihydro-2H-3,1-benzoxazin-2-one (1.6 g, 5.6 mmol), bis(pinacolato)diboron (1.6 g, 6.3 mmol), potassium acetate (1.5 g, 15.3 mmol), and [1,1'-bis(diphenylphosphino)ferrocene]palladium (II) chloride (1:1 complex with methylene chloride, 0.5 g, 0.6 mmol) in DMF (30 mL) was subject to a positive flow of nitrogen to remove oxygen and then heated at 85° C. under a blanket of nitrogen for 18 hours. The reaction mixture was allowed to cool to ambient temperature, treated with 3-bromo-5-fluoro-benzonitrile (1.2 g, 6 mmol), [1,1'-bis(diphenylphosphino)ferrocene]palladium (II) chloride (1:1 complex with methylene chloride, 0.5 g, 0.6 mmol), and sodium carbonate (2 g, 19 mmol) in water (10 mL). The resulted solution was heated at 85° C. for 3 hours under a blanket of nitrogen, cooled to rt, and treated with brine (50 mL). Ethyl acetate (100 mL) was added, organic layer was separated, dried (MgSO4), and evaporated. The residue was purified by a flash silica gel column chromatography (THF:hexane/2:3) to yield 3-(4,4-dimethyl-8-methoxy-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)-5-fluorobenzonitrile as a white solid (0.6 g, 33percent): mp 252-253° C.; 1H-NMR (DMSO-d6) delta9.76 (s, 1H), 8.21 (s, 1H), 8.07 (d, 1H, J=10.6 Hz), 7.82 (m,1H), 7.39 (s 1H), 7.36 (s, 1H), 3.93 (s, 3H), 1.66 (s, 6H). MS (ESI) m/z 325 [M-H]-. |
33% | With potassium acetate; sodium carbonate; In water; ethyl acetate; N,N-dimethyl-formamide; | A mixture of 6-bromo-8-methoxy-4,4-dimethyl-1,4-dihydro-2H-3,1-benzoxazin-2-one (1.6 g, 5.6 mmol), bis(pinacolato)diboron (1.6 g, 6.3 mmol), potassium acetate (1.5 g, 15.3 mmol), and [1,1'-bis(diphenylphosphino)ferrocene]palladium (II) chloride (1:1 complex with methylene chloride, 0.5 g, 0.6 mmol) in DMF (30 mL) was subject to a positive flow of nitrogen to remove oxygen and then heated at 85° C. under a blanket of nitrogen for 18 hours. The reaction mixture was allowed to cool to ambient temperature, treated with 3-bromo-5-fluoro-benzonitrile (1.2 g, 6 mmol), [1,1'-bis(diphenylphosphino)-ferrocene]palladium (II) chloride (1:1 complex with methylene chloride, 0.5 g, 0.6 mmol), and sodium carbonate (2 g, 19 mmol) in water (10 mL). The resulted solution was heated at 85° C. for 3 hours under a blanket of nitrogen, cooled to rt, and treated with brine (50 mL). Ethyl acetate (100 mL) was added, organic layer was separated, dried (MgSO4), and evaporated. The residue was purified by a flash silica gel column chromatography (THF:hexane/2:3) to yield 3-(4,4-dimethyl-8-methoxy-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)-5-fluorobenzonitrile as a white solid (0.6 g, 33percent): mp 252-253° C.; 1H-NMR (DMSO-d6) delta9.76 (s, 1H), 8.21 (s, 1H), 8.07 (d, 1H, J=10.6 Hz), 7.82 (m, 1H), 7.39 (s 1H), 7.36 (s, 1H), 3.93 (s, 3H), 1.66 (s, 6H). MS (ESI) m/z 325 [M-H]-. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
686 mg | With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; potassium carbonate; In 1,2-dimethoxyethane; at 80℃; for 2h;Inert atmosphere; | A mixture of 3-bromo-5-fluorobenzonitrile (618 mg), <strong>[1151802-22-0]1-<strong>[1151802-22-0]cyclopropyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole</strong></strong> (1.0 g), PdCl2(dppf) (113 mg), 2 M aqueous potassium carbonate solution (3.86 mL) and DME (10 mL) was stirred under a nitrogen atmosphere at 80C for 2 hr. To the reaction mixture was added water at room temperature, and the aqueous layer was extracted with ethyl acetate. The organic layer was washed with saturated brine and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (NH, ethyl acetate/hexane) to give the title compound (686 mg). MS: [M+H]+ 228.0 |
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