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CAS No. : | 32316-92-0 | MDL No. : | MFCD00236051 |
Formula : | C10H9BO2 | Boiling Point : | - |
Linear Structure Formula : | (HO)2BC10H7 | InChI Key : | KPTRDYONBVUWPD-UHFFFAOYSA-N |
M.W : | 171.99 | Pubchem ID : | 2734375 |
Synonyms : |
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Chemical Name : | 2-Naphthaleneboronic 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 |
---|---|---|
85% | With potassium carbonate;tetrakis(triphenylphosphine) palladium(0); In tetrahydrofuran; for 24h;Heating / reflux; | 2- A. Production of compound 2a; [79] After l-bromo-3-iodobenzene (10 g, 35.35 mmol) and 2-naphthalene bromic acid(5.47 g, 31.82 mmol) were dissolved in anhydrous THF (100 mL), Pd(PPh ) (1.2 g, 1.06 mmol) and 50 mL of 2M K CO aqueous solution were added and then refluxed <n="17"/>for 24 hours. The organic layer was extracted by using ethyl acetate and water was removed with magnesium sulfate. The organic layer was filtered at reduced pressure and concentrated, and the solvent was removed. The resulting substance was purified by using column chromatography and then recrystallized in THF and ethanol to obtain a white solid compound 2a (8.5 g, 85%).[80] MS [M + H] = 283 |
76% | With sodium carbonate;tetrakis(triphenylphosphine) palladium(0); In water; toluene; for 24h;Inert atmosphere; Reflux; | Under an argon gas atmosphere, 243 g (1.41 mol) of 2-naphthaleneboronic acid, 400 g (1.41 mol) of 3-bromoiodobenzene, 3.27 g (28.2 mmol) of tetrakis(triphenylphosphine)palladium(0), 6.4 L of toluene and 3.2 L of aqueous solution of 2M sodium carbonate were added together, and stirred while being refluxed for 24 hours. After the reaction was over, the mixture experienced filtration, through which aqueous phase thereof was eliminated. After organic phase thereof was washed by water and dried with magnesium sulfate, the toluene was distilled away under reduced pressure. Residue thereof was refined by silica-gel column chromatography, such that 303 g of 2-(3-bromophenyl)naphthalene was obtained at an yield of 76%. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
53% | With tetrakis(triphenylphosphine) palladium(0); potassium carbonate; In toluene; at 85℃; for 48h; | A mixture of 5,5'-dibromo-2,2'-bithiophene (6 g, 18.51 mmol) and naphthalene-2-ylboronic acid (2.22 g,12.95 mmol) were added to toluene (80 mL), 2 M K2CO3 (15 mL), and tetrakis(-triphenylphosphine) palladium(0) (0.17 g, 1.47 104 mol). After stirring for 48 h at 85 C, 2 N HCl (40 mL) were added. The crude product was extracted with dichloromethane and purified by column chromatography using hexane as the eluent. Yield: 2.5 g(53%); IR (KBr, cm1); 3031-3064 (aromatic CH), 1H NMR(300 MHz, CDCl3, ppm): d 8.04 (s, 1H), 7.88-7.86 (m, 3H),7.76-7.75 (d, J 1.8 Hz, 1H), 7.52-7.48 (m, 2H), 7.37-7.35 (d,J 3.9 Hz, 1H), 7.15-7.14 (d, J 3.6 Hz 1H), 7.02-6.98 (m, 2H). |
45% | With potassium carbonate;tetrakis(triphenylphosphine) palladium(0); In tetrahydrofuran; water; for 24h;Heating / reflux; | Synthesis of Compound 1195,5'-dibromo-2,2'-bothiophene (5.00 g, 15.4 mmol), naphthalene-2-boronic acid (1.86 g, 10.8 mmol) and potassium carbonate (30 mL, 2 M aqueous solution) were suspended in THF (50 mL). Tetrakis(triphenylphosphine)palladium (0.18 g, 0.16 mmol) was added to the suspension. The resulting mixture was stirred at reflux for about 24 hours and thereafter cooled to room temperature. Precipitate was filtered off with suction. The crude product was dissolved in THF, filtered, and washed with THF. The filtrate was concentrated in vacuo and recrystallized from ethyl acetate to give Compound 119 (2.60 g, 45%). |
45% | With potassium carbonate;tetrakis(triphenylphosphine) palladium(0); In tetrahydrofuran; water; for 24h;Heating / reflux; | 5,5'-dibromo-2, 2'-bothiophene (5.00 g, 15.4 mmol), naphthalene-2-boronic acid (1.86 g, 10.8 mmol) and potassium carbonate (30 mL, 2 M aqueous solution) were suspended in THF (50 mL). Tetrakis (triphenylphosphine) palladium (0.18 g, 0.16 mmol) was added to the suspension. The resulting mixture was stirred at reflux for about 24 hours and thereafter cooled to room temperature. Precipitate was filtered off with suction. The crude product was dissolved in THF, filtered, and washed with THF. The filtrate was concentrated in vacuo and recrystallized from ethyl acetate to give Compound 119 (2.60 g, 45%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
47% | With potassium carbonate;tetrakis(triphenylphosphine) palladium(0); In tetrahydrofuran; water; for 24h;Heating / reflux; | Example 13 : Preparation of compound 30; [196][197] 13-A. Preparation of compound 13a[198] Under N atmosphere, 1,3-dibromophenyl (10 g, 42.2 mmol), 2-naphthyl boronic acid (5.16 g, 42.2 mmol), and Pd(PPh ) (2.4 g, 2.1 mmol) were added to a 2 M aqueous solution of potassium carbonate (50 mL) and THF (300 mL). The mixture was refluxed under stirring for about 24 hours. After completing the reaction, the mixture was cooled to normal temperature. The organic layer was separated from the reaction mixture, dried over magnesium sulfate, and distilled under reduced pressure. The resultant was purified by column chromatography to prepare a compound 13a (4.6 g, 47%). MS [M] = 233 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
71% | With sodium carbonate;palladium(II) hydroxide/carbon; In N,N-dimethyl-formamide; at 100℃; for 9.0h; | N-methyl-6-(2-naphthyl)-3-nitropyridin-2-amine. To a vial equipped with a teflon-coated cap was added <strong>[33742-70-0]6-chloro-N-methyl-3-nitropyridin-2-amine</strong> (180 mg, 0.96 mmol), sodium carbonate (102 mg, 0.96 mmol) and 2-naphthylboronic acid (198 mg, 1.15 mmol) in anhydrous DMF (5 mL). Nitrogen was bubbled through the reaction mixture for 10 min. Palladium hydroxide (20% on carbon, 13 mg) was added, and the reaction was sealed and heated at 100 C. for 9 h on a shaker block. The reaction was cooled to room temperature and diluted with water (1 mL) and methanol (1 mL). The product precipitated and was collected to yield the titled compound 190 mg (71%) as a gold solid. HPLC (method A): Rt=11.6 min. MS: [M+H-tbutyl]+=280. |