Structure of 1350377-66-0
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CAS No. : | 1350377-66-0 |
Formula : | C13H20BNO3 |
M.W : | 249.11 |
SMILES Code : | NC1=CC=C(B2OC(C)(C)C(C)(C)O2)C(OC)=C1 |
MDL No. : | MFCD22494808 |
InChI Key : | ZYFRJTZQMFNEHS-UHFFFAOYSA-N |
Pubchem ID : | 67003693 |
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 anhydrous potassium acetate; palladium diacetate; tricyclohexylphosphine; In 1,4-dioxane; at 95℃;Inert atmosphere; | General procedure: To a stirred solution of tricyclohexylphosphine (7.18 g, 25.7 mmol) in 1,4-dioxane (1.2 L) under argon atmosphere were added bis(pinacolato)diboron (89.62 g, 352.9 mmol) and potassium acetate (62.98 g, 641.7 mmol), followed by 4-bromo-3-methylaniline (A-1.1, 60.00 g, 320.8 mmol). The reaction mixture was purged with argon for 10 min. Palladium(II) acetate (5.77 g, 25.7 mmol) was added, and the mixture was purged with argon for 10 min. The reaction mixture was heated at 95 C with stirring for 16 h. After this time, the reaction mixture was allowed to cool to room temperature, passed through a bed of diatomaceous earth, and washed with methyl tert-butyl ether (4 × 250 mL). The filtrate was washed with water (2 × 500 mL) and brine (2 × 250 mL). The organic layer was separated, dried over anhydrous sodium sulfate and concentrated under reduced pressure. The crude product was purified by column chromatography (silica gel, 10% ethyl acetate/hexanes) to afford 3-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (A-2.1, 44.80 g, yield: 60%) as a pale brown solid: ESI (m/z) 234 [C13H20BNO2 + H]+. | |
With anhydrous potassium acetate; palladium diacetate; tricyclohexylphosphine; In 1,4-dioxane; at 95℃;Inert atmosphere; | General procedure: To a stirred solution of tricyclohexylphosphine (7.18 g, 25.7 mmol) in 1,4-dioxane (1.2 L) under argon atmosphere were added bis(pinacolato)diboron (89.62 g, 352.9 mmol) and potassium acetate (62.98 g, 641.7 mmol), followed by 4-bromo-3-methylaniline (A-1.1, 60.00 g, 320.8 mmol). The reaction mixture was purged with argon for 10 min. Palladium(II) acetate (5.77 g, 25.7 mmol) was added, and the mixture was purged with argon for 10 min. The reaction mixture was heated at 95 C with stirring for 16 h. After this time, the reaction mixture was allowed to cool to room temperature, passed through a bed of diatomaceous earth, and washed with methyl tert-butyl ether (4 × 250 mL). The filtrate was washed with water (2 × 500 mL) and brine (2 × 250 mL). The organic layer was separated, dried over anhydrous sodium sulfate and concentrated under reduced pressure. The crude product was purified by column chromatography (silica gel, 10% ethyl acetate/hexanes) to afford 3-methyl-4-(4,4,5,5- tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (A-2.1, 44.80 g, yield: 60%) as a pale brown solid: ESI (m/z) 234 [C13H20BNO2+ H]+. | |
With anhydrous potassium acetate; palladium diacetate; tricyclohexylphosphine; In 1,4-dioxane; at 95℃; for 16h;Inert atmosphere; | General procedure: To a stirred solution of tricyclohexylphosphine (7.18 g, 25.7 mmol) in 1,4-dioxane (1.2 L) under argon atmosphere were added bis(pinacolato)diboron (89.62 g, 352.9 mmol) and potassium acetate (62.98 g, 641.7 mmol), followed by 4-bromo-3-methylaniline (A-1.1, 60.00 g, 320.8 mmol). The reaction mixture was purged with argon for 10 min. Palladium(II) acetate (5.77 g, 25.7 mmol) was added, and the mixture was purged with argon for 10 min. The reaction mixture was heated at 95 C with stirring for 16 h. After this time, the reaction mixture was allowed to cool to room temperature, passed through a bed of diatomaceous earth, and washed with methyl tert-butyl ether (4 × 250 mL). The filtrate was washed with water (2 × 500 mL) and brine (2 × 250 mL). The organic layer was separated, dried over anhydrous sodium sulfate and concentrated under reduced pressure. The crude product was purified by column chromatography (silica gel, 10% ethyl acetate/hexanes) to afford 3-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (A-2.1, 44.80 g, yield: 60%) as a pale brown solid: ESI (m/z) 234 [C13H20BNO2 + H]+. |
With anhydrous potassium acetate; palladium diacetate; tricyclohexylphosphine; In 1,4-dioxane; at 95℃; for 16h;Inert atmosphere; | General procedure: To a stirred solution of tricyclohexylphosphine (7.18 g, 25.7 mmol) in 1,4-dioxane (1.2 L) under argon atmosphere were added bis(pinacolato)diboron (89.62 g, 352.9 mmol) and potassium acetate (62.98 g, 641.7 mmol), followed by 4-bromo-3-methylaniline (A-1.1, 60.00 g, 320.8 mmol). The reaction mixture was purged with argon for 10 min. Palladium(II) acetate (5.77 g, 25.7 mmol) was added, and the mixture was purged with argon for 10 min. The reaction mixture was heated at 95 C with stirring for 16 h. After this time, the reaction mixture was allowed to cool to room temperature, passed through a bed of diatomaceous earth, and washed with methyl tert-butyl ether (4 × 250 mL). The filtrate was washed with water (2 × 500 mL) and brine (2 × 250 mL). The organic layer was separated, dried over anhydrous sodium sulfate and concentrated under reduced pressure. The crude product was purified by column chromatography (silica gel, 10% ethyl acetate/hexanes) to afford 3-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (A-2.1, 44.80 g, yield: 60%) as a pale brown solid: ESI (m/z) 234 [C13H20BNO2+ H]+ | |
With [1,1'-bis(diphenylphosphino)ferrocene]dichloropalladium(II); anhydrous potassium acetate; triethylamine; at 90℃; for 16h;Inert atmosphere; | General procedure: To a stirred solution of tricyclohexylphosphine (7.18 g, 25.7 mmol) in 1,4-dioxane (1.2 L) under aigon atmosphere were added bis(pinacolato)diboron (89.62 g, 352.9 mmol) and potassium acetate (62.98 g, 641.7 mmol), followed by 4-bromo-3-methylaniline (A-1.1, 60.00 g, 320.8 mmol). The reaction mixture was purged with argon for 10 min. Palladium(II) acetate (5.77 g, 25.7 mmol) was added, and the mixture was purged with argon for 10 min. The reaction mixture was heated at 95 C with stirring for 16 h. After this time, the reaction mixture was allowed to cool to room temperature, passed through a bed of diatomaceous earth, and washed with methyl fe/7-butyl ether (4 x 250 mL). The filtrate was washed with water (2 * 500 mL) and brine (2 * 250 mL). The organic layer was separated, dried over anhydrous sodium sulfate and concentrated under reduced pressure. The crude product was purified by column chromatography (silica gel, 10% ethyl acetate/hexanes) to afford 3-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (A-2.1, 44.80 g, yield: 60%) as a pale brown solid: ESI (m/z) 234 [C13H20BNO2 + H]+. | |
General procedure: To a stirred solution of tricyclohexylphosphine (7.18 g, 25.7 mmol) in 1,4-dioxane (1.2 L) under argon atmosphere were added bis(pinacolato)diboron (89.62 g, 352.9 mmol) and potassium acetate (62.98 g, 641.7 mmol), followed by 4-bromo-3-methylaniline (A-1.1, 60.00 g, 320.8 mmol). The reaction mixture was purged with argon for 10 min. Palladium(II) acetate (5.77 g, 25.7 mmol) was added, and the mixture was purged with argon for 10 min. The reaction mixture was heated at 95 C with stirring for 16 h. After this time, the reaction mixture was allowed to cool to room temperature, passed through a bed of diatomaceous earth, and washed with methyl tert-butyl ether (4 × 250 mL). The filtrate was washed with water (2 × 500 mL) and brine (2 × 250 mL). The organic layer was separated, dried over anhydrous sodium sulfate and concentrated under reduced pressure. The crude product was purified by column chromatography (silica gel, 10% ethyl acetate/hexanes) to afford 3-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (A-2.1, 44.80 g, yield: 60%) as a pale brown solid: ESI (m/z) 234 [C13H20BNO2 + H]+. | ||
General procedure: To a stirred solution of tricyclohexylphosphine (7.18 g, 25.7 mmol) in 1,4-dioxane (1.2 L) under argon atmosphere were added bis(pinacolato)diboron (89.62 g, 352.9 mmol) and potassium acetate (62.98 g, 641.7 mmol), followed by 4-bromo-3-methylaniline (A-1.1, 60.00 g, 320.8 mmol). The reaction mixture was purged with argon for 10 min. Palladium(II) acetate (5.77 g, 25.7 mmol) was added, and the mixture was purged with argon for 10 min. The reaction mixture was heated at 95 C with stirring for 16 h. After this time, the reaction mixture was allowed to cool to room temperature, passed through a bed of diatomaceous earth, and washed with methyl tert-butyl ether (4 × 250 mL). The filtrate was washed with water (2 × 500 mL) and brine (2 × 250 mL). The organic layer was separated, dried over anhydrous sodium sulfate and concentrated under reduced pressure. The crude product was purified by column chromatography (silica gel, 10% ethyl acetate/hexanes) to afford 3-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (A-2.1, 44.80 g, yield: 60%) as a pale brown solid: ESI (m/z) 234 [C13H20BNO2 + H]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; In dichloromethane; at 0 - 20℃; | General procedure: To a mixture of 6d (40 mg, 0.178 mmol) and 7 (40 mg, 0.178 mmol) dissolved in 3 mL of DCM in ice-bath, HATU (122 mg, 0.320 mmol) was added. After stirring for 10 min, TEA (25 μL, 0.178 mmol) was dropped. The reaction was warmed to the room temperature and stirred overnight. After the completion of the reaction, the mixture was diluted with DCM (40 mL) and washed with water (3 * 20 mL) followed by brine (20 mL), dried over sodium sulfate, filtered, and evaporated. The crude product was purified by chromatograph (0-3% MeOH/DCM) to give the title compound 8d as a white solid (55 mg, 72%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With pyridine; In dichloromethane; at 0 - 20℃; for 10h; | To a 0 C solution of <strong>[1350377-66-0]3-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline</strong> (201mg, 0.807 mmol) in CH2Cl2 (2 mL) was sequentially added pyridine (0.13 mL, 1.61 mmol)and methanesulfonyl chloride (0.10 mL, 148 mg, 1.29 mmol). The reaction mixture wasallowed to reach ambient temperature and stirred for 10 hours. The solution was poured intowater (25 mL) and extracted with EtOAc (2 × 45 mL). The combined organic phase waswashed with saturated aq. NaCl solution (20 mL), dried over anhydrous Na2SO4, filtered andconcentrated in vacuo. This gave 214 mg (0.653 mmol, 76 %) of 10 as white solid, (EtOAc/npentan,1/1, Rf = 0.35). The crude product was used in sub-sequential Suzuki cross-couplingreactions without further purification. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In dichloromethane; at 20℃; for 2h; | To a 0 C solution of <strong>[1350377-66-0]3-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline</strong> (100mg, 0.401 mmol) in CH2Cl2 (1 mL) was added drop wise acetic anhydride (45.0 μL, 49.0 mg,1.61 mmol). The reaction mixture was allowed to reach ambient temperature and stirred for 2hours. The solution was poured into water (20 mL) and extracted with EtOAc (2 × 20 mL).The combined organic phase was washed with saturated aq. NaCl solution (15 mL), driedover anhydrous Na2SO4, filtered and concentrated in vacuo. This gave 83 mg (0.286 mmol,71 %) of 11 as white solid, TLC (THF/Et2O, 6/4, Rf = 0.47). The crude product was used inSuzuki cross-coupling reactions without further purification. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
81% | With dicyclohexyl-(2',6'-dimethoxybiphenyl-2-yl)-phosphane; dichloro bis(acetonitrile) palladium(II); triethylamine; at 110℃; for 22h;Sealed tube; Inert atmosphere; | General procedure: A dried pressure tube processing a Teflon screw valve was charged with the selected arylbromide (0.100 - 1.50 g), PdCl2(CH3CN)2 (2- 4 mol %) and SPhos (8 - 16 mol %). Thepressure tube was capped with a rubber septum and then evacuated and backfilled with N2(this sequence was carried out a total of three times). 1,4-Dioxane (1.6 - 4.5 mL) was addedvia a syringe, followed by the addition of NEt3 (3 eq) and pinacolborane (1.5 eq.). The rubberseptum was then replaced with a Teflon screw valve and the pressure tube was sealed. Thereaction mixture was stirred at 110 C until completion as determined by 1H NMRspectroscopy. The reaction mixture was then allowed to cool to room temperature, filteredthrough a thin pad of Celite using EtOAc and the eluent was concentrated in vacuo. Thecrude material was purification as described for each individual compound, or used directlyin the cross-coupling. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With [1,1'-bis(diphenylphosphino)ferrocene]dichloropalladium(II); potassium carbonate; In 1,4-dioxane; water; at 90℃; for 4h;Inert atmosphere; | General procedure: A stirred solution of 3-methyl-4-(4,4,5,5-tetramethyl-l,3,2-dioxaborolan-2-yl)aniline (39, 25.20 g, 108.5 mmol) and 2-amino-5-bromo-N-isopropyl-pyridine-3-carboxamide (41, 20.0 g, 77.5 mmol) in 1,4-dioxane (225 mL) and water (75 mL) was degassed with nitrogen gas for 10 min. Potassium carbonate (32.00 g, 232.5 mmol) was added, and the mixture was purged with nitrogen gas for 5 min. [1,1′-Bis(diphenylphosphino)ferrocene]dichloropalladium(II) (4.50 g, 6.15 mmol) was added, and the mixture was purged with nitrogen gas for 5 min. The mixture was heated to 90 C under a nitrogen atmosphere for 4 h. After this time, the reaction mixture was allowed to cool to room temperature. The mixture was filtered through a bed of diatomaceous earth and washed with ethyl acetate (2 × 100 mL). The filtrate was washed with water (2 × 100 mL) and brine (150 mL). The organic layer was separated, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The crude product was purified by column chromatography (silica gel, 80% ethyl acetate/hexanes) to afford 2-amino-5-(4-amino-2-methylphenyl)-N-isopropylnicotinamide (42, 17.0 g, 80%) as light brown solid. 1H NMR (400 MHz, DMSO-d6) d 8.19-8.18 (d, J = 7.6 Hz, 1H), 7.95 (s, 1H), 7.83 (s, 1H), 6.99 (s, 2H), 6.89-6.87 (d, J = 7.6 Hz, 1H), 6.47-6.44 (m, 2H), 5.03 (s, 2H), 4.10-4.01 (m, 1H), 2.10 (s, 3H), 1.14-1.12 (d, J = 6.4 Hz, 6H); ESI (m/z) 285 [C16H20N4O + H]+. |
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