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CAS No. : | 624741-47-5 | MDL No. : | MFCD09260444 |
Formula : | C13H15BFNO2 | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | HIMZNJDDVIROEC-UHFFFAOYSA-N |
M.W : | 247.07 | Pubchem ID : | 22240104 |
Synonyms : |
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Signal Word: | Warning | Class: | |
Precautionary Statements: | P280-P305+P351+P338 | UN#: | |
Hazard Statements: | H317-H319 | 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 |
---|---|---|
36% | With sodium carbonate;tetrakis(triphenylphosphine) palladium(0); In 1,2-dimethoxyethane; water; at 150.0℃; for 0.25h; | [2- (8-FLUOROIMIDAZO [1,] 2-a] [PYRIDIN-7-YL)] propan-2-ol (194 mg, 1.0 mmol) was coupled with 2,6-dibromopyridine (403 mg, 1.7 mmol) using [CS2CO3] (652 mg, 2.0 mmol), as described in Example 4, affording [2- [3- (6-] [BROMOPYRIDIN-2-YL)-8-FLUOROIMIDAZO] [1, 2-a] pyridin-7-yl] propan-2-ol as a white amorphous solid (210 mg, 60%): [M/Z] (ES+) 350,352 [(100%,] [MH] +). 2- [[3-(6-BROMOPYRIDIN-2-YL)-8-FLUOROIMIDAZO [1,] 2-a] pyridin-7- yl] propan-2-ol (50 mg, 0.143 [MMOL),] [3-FLUORO-2- (4,] 4,5, 5-tetramethyl- [1, 3,2] dioxaborolan-2-yl) benzonitrile (53 mg, 0.214 mmol) and tetrakis (triphenylphosphine) palladium [(0)] (8.3 mg, 0.0714 mmol) were suspended in 1,2-dimethoxyethane (3 ml) and 2N sodium carbonate solution (0.5 ml) and heated to [150C] for 900 s in a Smith Personal [SYNTHESISERTM] using microwave irradiation. The mixture was allowed to cool to ambient temperature, diluted with water (75 ml) and extracted into ethyl acetate (2 [X 75] ml). The combined organic phase was washed with water (50 ml) and brine (50 ml), dried over anhydrous sodium sulfate, filtered and evaporated to give an orange oil. The oil was purified by preparative-plate chromatography on silica eluting with dichloromethane: methanol : 0.880 ammonia (97: 3: 0.3). Collecting the appropriate fraction followed by trituration with diethyl ether (5 ml) and recrystallisation from ethyl [ACETATE/ISOHEXANE] gave the title imidazopyridine as a white amorphous solid (20 mg, 36%): [8S] (360 MHz, CDCl3) 1.73 (6H, s), 2.07 [(1H,] d, [J 1. 1),] 7.25 [(1H,] t, [J 7.] 0), 7.46-7. 59 (3H, m), 7.69 [(1H,] s), 7.84-7. 94 (2H, m), 8.20 [(1H,] s), 9.72 [(1H,] d, [J 7.] 4); [M/Z] (ES+) 391 (100%, [[MH] +).] |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
62% | With potassium acetate;(1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; In 1,4-dioxane; dimethyl sulfoxide; at 90.0℃; for 18.0h; | A mixture of 2-bromo-3-fluorobenzonitrile (1.20 g, 6.00 mmol), dried potassium acetate (1.18 g, 12.0 mmol) and bis (pinacolato) diboron (1.75 g, 6.89 mmol) in 1, 4-dioxan (14.7 ml) and dimethylsulfoxide (0.3 ml) was degassed by bubbling nitrogen through the mixture for 50 min. Dichloro [l, 1'-bis (diphenylphosphino) ferrocene] palladium (II) dichloromethane adduct (0.1481 g, 0.181 mmol) was added and the mixture was degassed for a further 10 min, then heated at 90C under nitrogen for 18 h. After allowing to cool, the mixture was filtered through glass fibre paper, and the solid was washed with a little dichloromethane. The combined filtrates were evaporated in vacuo and the residue was partitioned between 2 M aqueous NaOH (21 ml) and diethyl ether (20 ml). The aqueous layer was then acidified to pH 5 with concentrated hydrochloric acid (3 ml), causing a solid to precipitate. After leaving in a fridge for 3 days, the solid was collected by filtration, washed with water and dried under vacuum to leave 0.9191 g (62%) of the title compound as a white solid: 1H NMR (360 MHz, DMSO-d6) 8 1.34 (12H, s), 7.55-7. 59 (1H, m), 7.69-7. 75 (2H, m). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
67% | With potassium fluoride;tris-(dibenzylideneacetone)dipalladium(0); tri-tert-butyl phosphine; In tetrahydrofuran; 1,4-dioxane; at 50.0℃; for 18.0h; | c) 3'-Amino-6, 2'*6'-trilluorobiphensl-2-carbonitrile; A mixture of 3-bromo-2, 4-difluorophenylamine (0.6451 g, 3. 10 mmol) and 3-fluoro-2- (4, 4,5, 5-tetramethyl- [1, 3,2] dioxaborolan-2- yl) benzonitrile (0.915 g, 3.70 mmol) and potassium fluoride (0.5953 g, 10.2 mmol) in tetrahydrofuran (8 ml) was degassed with nitrogen for 15 min before adding tris (dibenzylideneacetone) dipalladium (0) (56.9 mg, 0.0621 mmol) and tri-tert-butylphosphine (1.24 ml of a 0.1 M solution in 1,4- dioxane, 0.124 mmol). The mixture was degassed for a further 5 min, then heated at 50C for 18 h under nitrogen. After cooling to ambient temperature, the mixture was partitioned between water (50 ml) and ethyl acetate (40 ml). The organic layer was washed with saturated aqueous NaCl (20 ml), dried (Na2SO4) and evaporated in vacuo. The residue was purified by chromatography (silica gel, 30% EtOAc/isohexane) to afford 0. 5180 g (67%) of the title compound as a yellow solid: zu NMR (360 MHz, CDC13) 8 3.70 (2H, br s), 6.84-6. 92 (2H, m), 7.44 (1H, t, J 8. 4), 7.53 (1H, td, J 8. 2,5. 1), 7.61 (1E, d, J 7. 3). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium carbonate;tetrakis(triphenylphosphine)palladium (0); In 1,4-dioxane; dichloromethane; | EXAMPLE 12 6,2'-Difluoro-5'-[3-(2,4-difluorophenyl)-[1,2,4]triazin-5-yl]biphenyl-2-carbonitrile To a degassed mixture of 5-(3-bromo-4-fluorophenyl)-3-(2,4-difluorophenyl)-[1,2,4]triazine (0.2 g, 0.55 mmol) and <strong>[624741-47-5]3-fluoro-2-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)benzonitrile</strong> (0.270 g, 1.1 mmol) in 1,4-dioxane (6 ml) and sodium carbonate (2 ml, 2N solution) was added tetrakis(triphenylphosphine)palladium(0), and the mixture heated at 80 C. for 24 h. The mixture was cooled to ambient temperature and partitioned between water (30 ml) and dichloromethane (40 ml). The aqueous layer was extracted with dichloromethane (2*40 ml) and the combined organics dried over Mg2SO4, filtered and the solvent removed at reduced pressure. The crude product was chromatographed on silica gel, eluent 5% ethyl acetate in dichloromethane, to give the product as a pale yellow solid (0.014 g): deltaH (400 MHz, CDCl3) 6.99-7.10 (2H, m), 7.49 (4H, m), 8.30-8.44 (3H, m), 9.69 (1H, dd, J 0.8, 2.0 Hz); m/z (ES+) 407. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
64% | With dichloro[1,1'-bis(di-t-butylphosphino)ferrocene]palladium(II); sodium carbonate; In tetrahydrofuran; water; at 80.0℃; for 5.16667h;Inert atmosphere; | Synthesis of 3-fluoro-2-(pyrimidin-2-yl)benzonitrile (Intermediate in the synthesis of intermediate A-2) To a solution of <strong>[624741-47-5]3-fluoro-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile</strong> (4.98 g, 19.1 mmol) and 2-bromopyridine (3.85 g, 23 mmol) in THF (96 mL) was added Na2CO3 (6 g, 57.4 mmol) followed by water (43 mL). The reaction mixture was degassed with N2 for 10 minutes. PdCl2(dtbpf) (374 mg, 0.57 mmol) was added and the reaction mixture was stirred at 80 C. for 5 h. The solution was cooled to room temperature and a mixture of EtOAc and water was added. The aqueous was extracted twice with EtOAc and the combined organic layers were dried over MgSO4, filtered and evaporated. The title compound was precipitated by dissolving the residue in a minimum amount of EtOAc and then adding hexanes. The solid was filtered, washed with hexanes and dried to afford the title compound (2.46 g, 64%). MS (ESI) mass calcd. for C11H6FN3, 199.1; m/z found 200.1 [M+H]+. 1H NMR (400 MHz, Chloroform-d) delta 9.02-8.91 (m, 2H), 7.65 (dt, J=7.7, 1.0 Hz, 1H), 7.60-7.52 (m, 1H), 7.51-7.43 (m, 1H), 7.41 (t, J=4.9 Hz, 1H). |
64% | With dichloro[1,1?-bis[bis(1,1-dimethylethyl)phosphino]ferrocene-P,P?]palladium; sodium carbonate; In tetrahydrofuran; water; at 80.0℃; for 5.0h;Inert atmosphere; | 10286] To a solution of 3-fluoro-2-(4,4,5,5-tetramethyl-1, 3,2-dioxaborolan-2-yl)benzonitrile (4.98 g, 19.1 mmol) and2-bromopyrimidine (3.85 g, 23 mmol) in THF (96 mE) was added Na2CO3 (6 g, 57.4 mmol) followed by water (43 mE). The reaction mixture was degassed with N2 for 10 minutes. PdC12(dtbpf) (374 g, 0.57 mmol) was added and the reaction mixture was stirred at 800 C. for 5 h. The solution was cooled to room temperature and a mixture of EtOAc and water was added. The aqueous was extracted twice with EtOAc and the combined organic layers were dried over Mg504, filtered and evaporated. The title compound was precipitated by dissolving the residue in a minimum amount of EtOAc and then adding hexanes. The solid was filtered, washed with hexanes and dried to afford the title compound (2.46 g, 64%). MS (ESI) mass calcd. for C,,H6FN3, 199.1; mlz found 200.1 [M+H]. ?H NMR (400 MHz, Chloroform-d) oe 9.02-8.91 (m, 2H), 7.65 (dt, J7.7, 1.0 Hz, 1H), 7.60-7.52 (m, 1H), 7.5 1-7.43 (m, 1H), 7.41 (t, J4.9 Hz, 1H). |
64% | With dichloro[1,1'-bis(di-t-butylphosphino)ferrocene]palladium(II); sodium carbonate; In tetrahydrofuran; water; at 80.0℃; for 5.0h; | Synthesis of 3-fluoro-2-(pyrimidin-2-yl)benzonitrile (Intermediate in the synthesis of intermediate A-2) To a solution of <strong>[624741-47-5]3-fluoro-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile</strong> (4.98 g, 19.1 mmol) and 2-bromopyrimidine (3.85 g, 23 mmol) in THF (96 mL) was added Na2CO3 (6 g, 57.4 mmol) followed by water (43 mL). The reaction mixture was degassed with N2 for 10 minutes. PdCl2(dtbpf) (374 mg, 0.57 mmol) was added and the reaction mixture was stirred at 80 C. for 5 h. The solution was cooled to room temperature and a mixture of EtOAc and water was added. The aqueous was extracted twice with EtOAc and the combined organic layers were dried over MgSO4, filtered and evaporated. The title compound was precipitated by dissolving the residue in a minimum amount of EtOAc and then adding hexanes. The solid was filtered, washed with hexanes and dried to afford the title compound (2.46 g, 64%). MS (ESI) mass calcd. for C11H6FN3, 199.1. m/z found 200.1 [M+H]+. 1H NMR (400 MHz, Chloroform-d) delta 9.02-8.91 (m, 2H), 7.65 (dt, J=7.7, 1.0 Hz, 1H), 7.60-7.52 (m, 1H), 7.51-7.43 (m, 1H), 7.41 (t, J=4.9 Hz, 1H). |
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