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CAS No. : | 59016-93-2 | MDL No. : | MFCD00792672 |
Formula : | C7H9BO3 | Boiling Point : | - |
Linear Structure Formula : | C6H4(CH2OH)(B(OH)2) | InChI Key : | PZRPBPMLSSNFOM-UHFFFAOYSA-N |
M.W : | 151.96 | Pubchem ID : | 2734706 |
Synonyms : |
|
Chemical Name : | 4-(Hydroxymethyl)benzeneboronic acid |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H315-H319-H335 | 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 |
---|---|---|
With potassium acetate;(1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; In N,N-dimethyl-formamide; at 20 - 60℃; for 2h; | A solution of compound 52ii (100 mg, 0.48 mmol), 52iii (73 mg, 0.48 mmol), and KOAc (190 mg, 1.92 mmol) in DMF (5 ml) was degassed thrice and PdCl2(drhopf) (36 mg, 0.048 mmol) added to it at rt under an argon atmosphere. The reaction mixture was heated at 6O0C for two hours, diluted with ethyl acetate (EA) and washed with brine. The organic layer was dried, concentrated, and the residue separated by column chromatography on silica gel employing as eluent EA/Hex (0 - 80percent) to yield 52i. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With caesium carbonate;PdCl2[dppf]; In tetrahydrofuran; N,N-dimethyl-formamide; | Step 4. Preparation of (4'-Trifluoromethyl-biphenyl-4-yl)-methanol (compound 36D) 1-Bromo-4-trifluoromethyl-benzene (814 mg, 3.62 mmol), 4-hydroxymethylphenylboronic acid (600 mg, 3.98 mmol), cesium carbonate (2.36 g, 7.24 mmol), and PdCl2(dppf) (132 mg, 0.181 mmol) were added to 10 ml of a 1:1 solution of DMF/THF. The reaction was flushed with nitrogen and heated to 90 C. for 1 h. The reaction was cooled, poured into diethyl ether and washed with water (2*50 ml), brine (1*50 ml) and dried over anhydrous sodium sulfate. The crude product was filtered through silica gel, eluted with diethyl ether, and concentrated to provide the title compound. MS m/z 251 (M-1). | |
With caesium carbonate;palladium dichloride; In tetrahydrofuran; DMF (N,N-dimethyl-formamide); at 90℃; for 1h;Heating / reflux; | Step 1.Preparation of (4'-Trifluoromethyl-biphenyl-4-yl)-methanol (Compound 3A) 1-Bromo-4-trifluoromethyl-benzene (814 mg, 3.62 mmol), 4-hydroxymethylphenylboronic acid (600 mg, 3.98 mmol), cesium carbonate (2.36 g, 7.24 mmol), and PdCl2(dppf) (132 mg, 0.181 mmol) were added to 10 ml of a 1:1 solution of DMF/THF. The reaction was flushed with nitrogen and heated to 90 C. for 1 h.The reaction was cooled, poured into diethyl ether and washed with water (2*50 ml), brine (1*50 ml) and dried over anhydrous sodium sulfate.The crude product was filtered through silica gel, eluted with diethyl ether, and concentrated to provide the title compound. MS m/z 251 (M-1). | |
With bis-triphenylphosphine-palladium(II) chloride; caesium carbonate; In tetrahydrofuran; N,N-dimethyl-formamide; at 90℃; for 1h;Inert atmosphere; | A mixture of Compound 33A (450 mg, 2.0 mmol), 4- (hydroxymethyl)phenylboronic acid (334 mg, 2.2 mmol), CS2CO3 (1.30 g, 4.0 mmol), and Pd(PPh3)Cl2 (140 mg, 0.2 mmol) in DMF/THF (10 mL, 1 : 1 in volume) was heated at 90 C under nitrogen for 1 hour. The mixture was cooled down to room temperature, diluted with diethyl ether (50 mL), washed with water (50 mL x 2) and brine (50 mL), dried over anhydrous sodium sulfate, filtered, and concentrated to give a crude product, which was purified with column chromatography on silica gel (ethyl acetate in petroleum ether, from 0% to 10% v/v) to yield Compound 33B: LC-MS (ESI) m/z: 235 [M-OH]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | In tetrahydrofuran; for 22h;Reflux; | A suspension of 4-(hydroxymethyl)phenylboronic acid (1.00 g, 6.6. mmol) and pinacol (0.79 g, 6.7 mmol) in tetrahydrofurane (40 mL) was refluxed over 22 h. During this time the starting materials were completely dissolved. The solvent was removed in vacuum (10 mbar), the residue redissolved in CH2Cl2 / EtOAc and purified by column chromatography on silica gel using the mixture of CH2Cl2 / EtOAc (9/1, v/v) as eluent. Yield 1.4 g (92%). Rf= 0.3 (silica, eluent - CH2Cl2 / EtOAc, 9/1, v/v). 1H NMR (200 MHz, CDCl3), delta in ppm: 1.35 (s, 12H), 4.71 (s, 2H), 7.37 (d, 2H, 3J = 8.2 Hz), 7.81 (d, 2H, 3J = 8.2 Hz). |
92% | In tetrahydrofuran; for 22h;Reflux; | Synthesis4-(Hvdroxymethyl)phenylboronic acid pinacol ester:A suspension of 4-(hydroxymethyl)phenylboronic acid (1.00 g, 6.6 mmol) and pinacol (0.79 g, 6.7 mmol) in tetrahydrofurane (40 ml_) was refluxed over 22 h. During this time the starting materials were completely dissolved. The solvent was removed in vacuum (10 mbar), the residue redissolved in CH2CI2 / EtOAc and purified by column chromatography on silica gel using the mixture of CH2CI2 / EtOAc (9/1 , v/v) as eluent. Yield 1.4 g (92%). Rf= 0.3 (silica, eluent - CH2CI2 / EtOAc, 9/1 , v/v). H NMR (200 MHz, CDCI3), delta in ppm: 1.35 (s, 12H), 4.71 (s, 2H), 7.37 (d, 2H, 3J = 8.2 Hz), 7.81 (d, 2H, 3J = 8.2 Hz). |
With magnesium sulfate; In acetonitrile; for 24h;Reflux; | To a stirred solution of 4-(hydroxymethyl) phenylboronic acid (0.4 g, 2.63 mmol) in acetonitrile (15 mL), MgS04 (3 g) and pinacol (0.37 g, 3.15 mmol) are added. The reaction mixture is heated up to about 80C and allowed to reflux for about 24 hours. After completion of the reaction, solvent is evaporated under vacuum. The crude mixture is dissolved in dichloromethane and filtered. The obtained product (4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl) methanol (i.e. compound 1) is used for further reaction without purification. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
62% | With sodium carbonate;tetrakis(triphenylphosphine) palladium(0); In 1,4-dioxane; water; at 100℃; for 4h;Inert atmosphere; | Example 113 Synthesis of N-((4,6-dimethyl-2-oxo-1,2-dihydropyridin-3-yl)methyl)-5-(ethyl(tetrahydro-2H-pyran-4-yl)amino)-4'-(hydroxymethyl)-4-methyl-[1,1'-biphenyl]-3-carboxamide To a stirred solution of <strong>[1403257-80-6]5-bromo-N-((4,6-dimethyl-2-oxo-1,2-dihydropyridin-3-yl)methyl)-3-(ethyl(tetrahydro-2H-pyran-4-yl)amino)-2-methylbenzamide</strong> (200 mg, 0.42 mmol) and 4-(hydroxymethyl)phenylboronic acid (96 mg, 0.63 mmol) in dioxane (2.5 mL), aqueous 2M Na2CO3 solution (0.75 mL, 1.51 mmol) was added and solution was purged with argon for 15 min. Then Pd(PPh3)4 (48 mg, 0.04 mmol) was added and argon was purged again for 15 min. Reaction mass was heated at 100 C. for 4 h. On completion, reaction mixture was diluted with water and extracted with 10% MeOH/DCM (3 times). Combined organic layer was dried over sodium sulphate. Removal of the solvent under reduced pressure followed by column chromatographic purification afforded the title compound (130 mg, 62%). LCMS: 504.15 (M+1)+; HPLC: 98.86% ( 254 nm) (Rt; 4.240; Method: Column: YMC ODS-A 150 mm*4.6 mm*5mu; Mobile Phase: A; 0.05% TFA in water/B; 0.05% TFA in acetonitrile; Inj. Vol: 10 muL, Col. Temp.: 30 C.; Flow rate: 1.4 mL/min.; Gradient: 5% B to 95% B in 8 min, Hold for 1.5 min, 9.51-12 min 5% B); 1H NMR (DMSO-d6, 400 MHz) delta 11.45 (s, 1H), 8.19 (t, 1H), 7.57 (d, 2H, J=7.2 Hz), 7.39 (s, 1H), 7.37 (d, 2H), 7.21 (s, 1H), 5.85 (s, 1H), 5.20 (t, 1H, J=5.2 Hz), 4.52 (d, 2H, J=5.6 Hz), 4.28 (d, 2H, J=3.6 Hz), 3.81-3.84 (m, 2H), 3.22-3.32 (m, 2H), 3.08-3.09 (m, 2H), 3.01 (m, 1H), 2.24 (s, 3H), 2.20 (s, 3H), 2.10 (s, 3H), 1.65-1.67 (m, 2H), 1.51-1.53 (m, 2H), 0.83 (t, 3H, J=6.4 Hz). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
94% | With caesium carbonate; In N,N-dimethyl-formamide; at 60℃; | 4-((2-cyanobenzo[d]thiazol-6-yloxy)methyl)phenylboronic acid (6) 2-Cyano-6-hydroxybenzothiazole (2) (150 mg, 0.85 mmol, 1.1 equiv.) and 4-(hydroxymethyl)benzeneboronic acid (5) (166 mg, 0.77 mmol, 1 equiv.) were dissolved in 15 mL dry dimethylformamide (DMF) prior to the addition of cesium carbonate (277 mg, 0.85 mmol, 1 equiv.). The mixture was stirred at 60° C. for 45-50 minutes before it was allowed to cool to room temperature. 100 mL EtOAc was added to the reaction mixture, and the organic phase was washed three times with DI H2O. The aqueous layers were combined and washed three times with EtOAc. All of the organic layers were combined, washed twice with brine, dried over sodium sulfate, and concentrated. The crude material was purified on a silica column (90:10 EtOAc:methanol, dry loaded) to give 225 mg (94percent) of the pure product. 1H NMR (400 MHz, d6-Acetone): delta 5.33 (2H, s), 7.23 (2H, s), 7.45 (1H, dd, J=9.0, 2.6 Hz), 7.52 (2H, d, J=8.0 Hz), 7.93 (3H, m), 8.16 (1H, d, J=8.8 Hz). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | With C46H49BrClFeN3Pd; copper diacetate; caesium carbonate; In 1,4-dioxane; at 110.0℃; for 24h; | General procedure: A 10 mL round-bottom flask was charged with the prescribedamount of catalyst Pd/Cu, aryl chlorides (0.5 mmol), phenylboronicacids containing hydroxymethyl (0.75 mmol), Cs2CO3 (1.0 mmol)and dioxane (5 mL) in air. The reaction mixture was then placedin an oil bath and heated at 110 C for 24 h. After removal of thesolvent, the resulting residue was purified by flash chromatographyon silica gel using CH2Cl2 as eluent. The products 4a-k, and4m are known compounds [6,9] except for 4l and 4n. |
90% | With C46H49BrClFeN3Pd; copper diacetate; caesium carbonate; In 1,4-dioxane; at 110.0℃; for 24h; | General procedure: A 10 mL round-bottom flask was charged with the prescribedamount of catalyst Pd/Cu, aryl chlorides (0.5 mmol), phenylboronicacids containing hydroxymethyl (0.75 mmol), Cs2CO3 (1.0 mmol)and dioxane (5 mL) in air. The reaction mixture was then placedin an oil bath and heated at 110 C for 24 h. After removal of thesolvent, the resulting residue was purified by flash chromatographyon silica gel using CH2Cl2 as eluent. The products 4a-k, and4m are known compounds [6,9] except for 4l and 4n. |
90% | With C46H49BrClFeN3Pd; copper diacetate; caesium carbonate; In 1,4-dioxane; at 110.0℃; for 24h; | General procedure: A 10 mL round-bottom flask was charged with the prescribedamount of catalyst Pd/Cu, aryl chlorides (0.5 mmol), phenylboronicacids containing hydroxymethyl (0.75 mmol), Cs2CO3 (1.0 mmol)and dioxane (5 mL) in air. The reaction mixture was then placedin an oil bath and heated at 110 C for 24 h. After removal of thesolvent, the resulting residue was purified by flash chromatographyon silica gel using CH2Cl2 as eluent. The products 4a-k, and4m are known compounds [6,9] except for 4l and 4n. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate; In 1,2-dimethoxyethane; water; at 90℃; for 19h;Inert atmosphere; | 5.1.19 [4-(3-Methylquinolin-2-yl)phenyl]methanol (23) To a suspension of <strong>[57876-69-4]2-chloro-3-methylquinoline</strong> (21, 533 mg, 3.00 mmol) and [4-(hydroxymethyl)phenyl]boronic acid (22, 501 mg, 3.30 mmol) in 1,2-dimethoxyethane (20 mL) were added Pd(PPh3)4 (173 mg, 0.15 mmol) and 1 M Na2CO3 aqueous solution (7.5 mL), and the mixture was stirred at 90 C for 19 h under argon gas atmosphere. After cooling at room temperature, the mixture was partitioned between EtOAc and water. The organic layer was dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by silica gel column chromatography (0-5% MeOH in CHCl3) to give 23 as a pale yellow oil. 1H NMR (DMSO-d6) delta 2.46 (s, 3H), 4.60 (d, 2H, J = 5.7 Hz), 5.27 (t, 1H, J = 5.7 Hz), 7.45 (d, 2H, J = 8.3 Hz), 7.56-7.65 (m, 3H), 7.67-7.73 (m, 1H), 7.93 (d, 1H, J = 8.1 Hz), 7.98 (d, 1H, J = 8.2 Hz), 8.25 (s, 1H); MS (ESI) m/z 250 [M+H]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
75% | With tetrakis(triphenylphosphine) palladium(0); potassium carbonate; In 1,4-dioxane; water; at 100℃; | Aqueous potassium carbonate solution (3.0 M, 17 mL, 51 mmol) was added to a solution of [4-(hydroxymethyl)phenyl]boronic acid (96percent, 4.0 g, 25 mmol) and 4-bromo- 1 ,3-thiazole (96percent, 6.48 g, 37.9 mmol) in 1 ,4-dioxane (75 mL). Tetrakis(triphenylphosphine)palladium(0) (885 mg, 0.766 mmol) was added, and thereaction mixture was heated at 100 00 overnight. After cooling to room temperature, the reaction mixture was diluted with water and extracted several times with ethyl acetate. The combined organic layers were washed with saturated aqueous sodium chloride solution, dried over magnesium sulfate, filtered, and concentrated in vacuo; silica gel chromatography (Gradient: 25percent to 50percent ethyl acetate in heptane) provided the productas a cream-colored solid. Yield: 3.60 g, 18.8 mmol, 75percent. LCMS m/z 192.0 [M+H]. 1H NMR (400 MHz, ODd3) oe 8.92 (d, J=2.0 Hz, 1 H), 7.95 (br d, J=8.2 Hz, 2H), 7.56 (d, J=2.0 Hz, 1H), 7.46 (br d, J=8.3 Hz, 2H), 4.76 (5, 2H). |
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