Structure of 197007-87-7
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CAS No. : | 197007-87-7 |
Formula : | C6H6BrNO |
M.W : | 188.02 |
SMILES Code : | OCC1=C(Br)C=CN=C1 |
MDL No. : | MFCD09910219 |
InChI Key : | DDZMBVCLSZAYOT-UHFFFAOYSA-N |
Pubchem ID : | 435086 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
* 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 |
---|---|---|
With sodium tetrahydroborate; In ethanol; at 0℃; for 0.5h; | 4-Bromo-pyridine-3-carbaldehycie (240 mg) in ethanol (10 ml_) at 0C was treated with sodium borohydride (139 mg) for 30 min. The reaction mixture was then diluted with ethyl acetate and washed with aqueous ammonium chloride and brine to yield (4-bromo-pyridin-3-yl)-methanol as a white solid.1HNMR (CDCI3, 300 MHz) delta (ppm): 10.4 (s, 1 H), 9.01 (s, 1 H), 8.56 (d, J = 5.1 Hz, 1 H), 7.63 (d, J = 5.1 Hz, 1 H). | |
With sodium tetrahydroborate; In ethanol; at 0℃; for 0.5h; | 4-Bromo-pyridine-3-carbaldehyde (240 mg) in ethanol (10 ml_) at 0C was treated with sodium borohydride (139 mg) for 30 min. The reaction mixture was then diluted with ethyl acetate and washed with aqueous ammonium chloride and brine to yield (4-bromo-pyridin-3-yl)-methanol as a white solid.1HNMR (CDCI3, 300 MHz) delta (ppm): 10.4 (s, 1 H), 9.01 (s, 1 H), 8.56 (d, J = 5.1 Hz, 1 H), 7.63 (d, J = 5.1 Hz, 1 H). | |
Step A: (4-Bromo-3-pyridyl)methanol 0.2 g of sodium borohydride is added in portions to a solution of 1 g of 4-bromonicotinaldehyde in 50 ml of MeOH at 0 C. The whole is then stirred for 6 hours gradually returning to ambient temperature. The reaction mixture is cooled to 0 C., then hydrolyzed with a saturated NH4Cl solution and extracted with CH2Cl2. The organic phases are then combined, washed with a saturated NaCl solution, dried over magnesium sulphate and then concentrated to dryness. The title compound is obtained in the form of a light brown gel which is used as is in the following Step. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With n-butyllithium; In tetrahydrofuran; at -78℃; for 0.5h; | To a solution of <strong>[197007-87-7](4-bromo-pyridin-3-yl)-methanol</strong> (53 mg 0.2 mmol) in THF (2 ml_) at -78C was added dropwise 2.5 M n-butyllithium (0.24 mL, 0.6 mmol). After 15 min a solution of 3-cyanobenzaldehyde (79 mg) in THF (0.5 ml) was added. The reaction mixture was stirred for 15 min, then quenched with ammonium chloride solution and extracted with ethyl acetate. The organic layer was dried over sodium sulfate, concentrated and the residue purified by flash chromatography to yield 3-{hydroxy-[3-(hydroxy-phenyl-methyl)-pyridin-4- yl]-methyl}-benzonitrile as white crystals.LCMS: 2.250 min, m/z: 317 (M + 1). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With n-butyllithium; In tetrahydrofuran; at -78℃; for 0.5h; | To a solution of <strong>[197007-87-7](4-bromo-pyridin-3-yl)-methanol</strong> (20 mg, 0.11 mmol) inTHF (1 ml_) at -78C was added dropwise 2. 5M ?-butyllithium (0.22 ml_). After 15 min, a solution of 3-cyanobenzaldehyde (69 mg) in THF (0.5 ml_) was added. The reaction mixture was stirred for 15 min, then quenched with ammonium chloride solution and extracted with ethyl acetate. The organic layer was dried over sodium sulfate, concentrated, and the residue purified by flash chromatography to yield 3-[hydroxy-(3-hydroxymethyl-pyridin-4-yl)- methyl]-benzonitrile as a white solid. | |
With n-butyllithium; In tetrahydrofuran; at -78℃; for 0.5h; | To a solution of <strong>[197007-87-7](4-bromo-pyridin-3-yl)-methanol</strong> (20 mg, 0.11 mmol) inTHF (1 mL) at -78C was added dropwise 2. 5M n-butyllithium (0.22 mL). After 15 min, a solution of 3-cyanobenzaldehyde (69 mg) in THF (0.5 mL) was added. The reaction mixture was stirred for 15 min, then quenched with ammonium chloride solution and extracted with ethyl acetate. The organic layer was dried over sodium sulfate, concentrated, and the residue purified by flash chromatography to yield 3-[hydroxy-(3-hydroxymethyl-pyridin-4-y|)- methyl]-benzonitrile as a white solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium carbonate;tetrakis(triphenylphosphine) palladium(0); In water; toluene;Heating / reflux; | To a flask charged with (4-bromo-pyridin-3~yl)-methanol (90 mg, 0.48 mmol), 3-cyanophenylboronic acid (84.4 mg, 0.57 mmol) and tetrakis(triphenylphousphine)-palladium(0) (28 mg) was added 2 M Na2CO3 (2 mL) and toluene (3 ml_). The reaction mixture was refluxed overnight and then extracted with ethyl acetate. The organic layer was dried over sodium sulfate and purified by column chromatography to yield 3-(3-Hydroxymethyl-pyridin-4- yl)-benzonitrile as a white solid.1HNMR (CDCI3, 300 MHz) delta (ppm) 8.74 (s, 1 H), 8.60 (d, J = 4.8 Hz, 1 H), 7.9-7.2 (m, 7H), 4.62 (s, 2H), 3.34 (bs, 1 H); LCMS: 2.815 min, m/z: 211 (M + 1) | |
With sodium carbonate;tetrakis(triphenylphosphine) palladium(0); In water; toluene;Heating / reflux; | To a flask charged with <strong>[197007-87-7](4-bromo-pyridin-3-yl)-methanol</strong> (90 mg, 0.48 mmol), 3-cyanophenylboronic acid (84.4 mg, 0.57 mmol) and tetrakis(triphenylphousphine)-palladium(0) (28 mg) was added 2 M Na2COe (2 ml_) and toluene (3 ml_). The reaction mixture was refluxed overnight and then extracted with ethyl acetate. The organic layer was dried over sodium sulfate and purified by column chromatography to yield 3-(3-Hydroxymethyl-pyridin-4- yl)-benzonitrile as a white solid.1HNMR (CDCI3, 300 MHz) delta (ppm) 8.74 (s, 1 H), 8.60 (d, J= 4.8 Hz, 1 H), 7.9-7.2 (m, 7H), 4.62 (s, 2H), 3.34 (bs, 1 H); LCMS: 2.815 min, m/z: 211 (M + 1). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium carbonate;tetrakis(triphenylphosphine) palladium(0); In 1,2-dimethoxyethane; ethanol; water; at 80℃; for 18.25h; | Step B: [4-(4-Chlorophenyl)-3-pyridyl]methanol 0.335 g of Pd(Ph3)4, 0.453 g of 4-chlorophenylboronic acid and then 2.9 ml of a 2M aqueous Na2CO3 solution are added in succession to a suspension of 0.545 g of the compound of Step A in a mixture of DME/EtOH (7.5 ml/3 ml). The whole is degassed under argon for 15 minutes and then heated at 80 C. for 18 hours. The reaction mixture is then filtered at ambient temperature. The filtrate is then hydrolyzed and extracted with CH2Cl2. The organic phases are combined, washed with a saturated NaCl solution and then dried over magnesium sulphate and concentrated to dryness. The resulting solid is finally purified by chromatography over silica gel (CH2Cl2/MeOH) to yield the title compound. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
84% | To a mixture solution of <strong>[197007-87-7](4-bromopyridin-3-yl)methanol</strong> (304 mg, 1.62 mmol)and tetrahydrofuran (10 mL) was added 60% sodium hydride (434 mg, 10.9 mmol) with cooling with ice. This mixture was stirred for 10 minutes with cooling with ice, subsequently heated to room temperature, and then stirred for 7 hours at the temperature. After the reaction mixture was cooled with ice, methyl iodide (0.11 mL, 1.78 mmol) was added thereto. This mixture was heated to room temperature and stirred for 7 hours at the temperature. After the mixture was cooled with ice, water (202 5 mL) was added thereto, followed by extracting with ethyl acetate. The organic layer was washed with brine, and anhydrous sodium sulfate was added to dry the layer. After anhydrous sodium sulfate was removed by filtration, the solvent was distilled off under reduced pressure and the residue was purified by flash chromatography to obtain 4-bromo-3-(methoxymethyl)pyridine (275 mg; yield, 84%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With bis-triphenylphosphine-palladium(II) chloride; copper(l) iodide; triethylamine; In N,N-dimethyl-formamide; at 80℃; for 6.0h;Inert atmosphere; | <strong>[197007-87-7](4-bromopyridin-3-yl)methanol</strong> (0.84 g, 5.32 mmol), 4-tert-Butylphenyl acetylene (1.0 g, 5.32 mmol), triethylamine (2.5 mL, 17.9 mmol), bis(triphenylphosphine)palladium(II) dichloride (0.19 g, 0.27 mmol), copper(I) iodide (0.06 g, 0.29 mmol), N,N-dimethylformamide (15 mL) Under a nitrogen atmosphere, the mixture was stirred for 6 hours at 80C. Was allowed to cool to room temperature, water was added, and the mixture was extracted with ethyl acetate to the reaction solution. The organic layer was washed with saturated brine, and dried with anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the solvent was evaporated under reduced pressure. Flash chromatograph the residueIt over was purified (eluent n- heptane / ethyl acetate) to obtain the desired product (1.73 g, purity 69%, 85% yield). | |
With bis-triphenylphosphine-palladium(II) chloride; copper(l) iodide; triethylamine; In N,N-dimethyl-formamide; at 80℃; for 6.0h;Inert atmosphere; | <strong>[197007-87-7](4-bromopyridin-3-yl)methanol</strong> (0.84 g, 5.32 mmol), 4-tert-butylphenylacetylene (1.0 g, 5.32 mmol), triethylamine (2.5 mL, 17.9 mmol), bis (triphenylphosphine) palladium (II) dichloride (0.19 g, 0.27 mmol), copper iodide (I) (0.06 g, 0.29 mmol), N, N- dimethylformamide (15 mL) under a nitrogen atmosphere and stirred for 6 hours at 80 C.. Was allowed to cool to room temperature, water was added, and the mixture was extracted with ethyl acetate to the reaction solution. The organic layer was washed with saturated brine, and dried with anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the solvent was evaporated under reduced pressure. The residue was purified by flash chromatography purification (eluent n- heptane / ethyl acetate) to obtain the desired product (1.73 g, purity 69%, 85% yield). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
88% | With triphenylphosphine; diethylazodicarboxylate; In tetrahydrofuran; toluene; at 20℃; for 15.0h;Cooling with ice; | (4-bromo-pyridin-3-yl) methanol (300 mg, 1.60 mmol), phenol (157 mg, 1.67 mmol), triphenylphosphine (634 mg, 2.42 mmol), in a mixed solution of tetrahydrofuran (15 mL), ice under cold, 40% diethyl azodicarboxylate toluene solution (1.1 mL, 2.42 mmol) was added. The temperature was raised to room temperature, the mixture was stirred at the same temperature for 15 hours. The solvent was evaporated under reduced pressure, and the residue was purified by flash chromatography was purified (eluent n- heptane / ethyl acetate) to obtain the desired product (372 mg, 88% yield). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
EtOH (1.8 mL) was added into a mixture of 4-bromo-3-ethylpyridinehydrobromide (49 mg, 0.18 mmol), B2(OH)4 (49 mg, 0.55 mmol), XPhos-Pd-G2 (14 mg, 0.018 mmol), XPhos (17 mg, 0.037 mmol), and KOAc (54 mg, 0.55 mmol). The reaction was degassed via N2 and stirred at 80C overnight. After cooling to room temperature, solutions of N-(2-(3-bromophenyl)propan-2-yl)-2-(trifluoromethyl)benzenesulfonamide (Intermediate 1J) (100 mg, 0.24 mmol) in EtOH/THF (0.3 mL/0.3 mL) and K2C03 (1.8 M, 0.31 mL, 0.55 mmol) were added respectively into the reaction. The mixture was degassed via N2 again and stirred at 85C overnight. The reaction was cooled to room temperature, filtered through celite, washed with EtOAc (3X), and concentrated in vacuo to give a residue which was dissolved into EtOAc. This solution was washed with brine (IX), dried over sodium sulfate, filtered, and concentrated in vacuo. The residue was purified by MS-HPLC to afford the title compound (16 mg, 20%). LCMS (method A): m/z 449.3 (M+H)+. NMR (CDC13) delta 8.54 (s, 1H), 8.46 (d, 1H), 7.83 (d, 1H), 7.79 (d, 1H), 7.59 (t, 1H), 7.47 (t, 1H), 7.31 (m, 2H), 7.21 (t, 1H), 7.11 (dt, 1H), 7.03 (d, 1H), 5.28 (s, 1H), 2.63 (q, 2H), 1.69 (s, 6H), 1.13 (t, 3H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
EtOH (1.8 mL) was added into a mixture of 4-bromo-3-ethylpyridinehydrobromide (49 mg, 0.18 mmol), B2(OH)4 (49 mg, 0.55 mmol), XPhos-Pd-G2 (14 mg, 0.018 mmol), XPhos (17 mg, 0.037 mmol), and KOAc (54 mg, 0.55 mmol). The reaction was degassed via N2 and stirred at 80C overnight. After cooling to room temperature, solutions of N-(2-(3-bromophenyl)propan-2-yl)-2-(trifluoromethyl)benzenesulfonamide (Intermediate 1J) (100 mg, 0.24 mmol) in EtOH/THF (0.3 mL/0.3 mL) and K2C03 (1.8 M, 0.31 mL, 0.55 mmol) were added respectively into the reaction. The mixture was degassed via N2 again and stirred at 85C overnight. The reaction was cooled to room temperature, filtered through celite, washed with EtOAc (3X), and concentrated in vacuo to give a residue which was dissolved into EtOAc. This solution was washed with brine (IX), dried over sodium sulfate, filtered, and concentrated in vacuo. The residue was purified by MS-HPLC to afford the title compound (16 mg, 20%). LCMS (method A): m/z 449.3 (M+H)+. NMR (CDC13) delta 8.54 (s, 1H), 8.46 (d, 1H), 7.83 (d, 1H), 7.79 (d, 1H), 7.59 (t, 1H), 7.47 (t, 1H), 7.31 (m, 2H), 7.21 (t, 1H), 7.11 (dt, 1H), 7.03 (d, 1H), 5.28 (s, 1H), 2.63 (q, 2H), 1.69 (s, 6H), 1.13 (t, 3H). |