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CAS No. : | 66217-20-7 | MDL No. : | MFCD01568860 |
Formula : | C14H15BrO | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | LIQQRPRDWMYCPK-UHFFFAOYSA-N |
M.W : | 279.17 | Pubchem ID : | 3798414 |
Synonyms : |
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Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | |
Hazard Statements: | H315-H319-H335 | 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 |
---|---|---|
2.31 g (92%) | A. 2-Bromo-6-butoxynaphthalene An oil dispersion of 480 mg (50%, 10 mmol, Alfa) of sodium hydride was washed three times with petroleum ether then the residue covered with 5 ml of dry THF. To the resulting stirred slurry was added dropwise a solution of 2.00 g (8.97 mmol, Aldrich) of 6-bromo-2-naphthol, in 10 ml of THF over 10 minutes. The reaction mixture was stirred for 30 minutes then 1.70 g (9.23 mmol, Aldrich) of 1-iodobutane and 15 ml of sieve-dried DMF were added. The resulting solution was heated to 60 for two hours, then cooled, added to 100 ml of H2 O and extracted with 50 ml of petroleum ether. The organic extract was washed with an additional 100 ml of H2 O, dried (MgSO4) and concentrated in vacuo to give a solid. The crude material was purified by flash chromatography (15*5 cm, pet ether) to afford 2.31 g (92%) of title compound as a white solid, m.p. 48-50. 60 MHz 1 H NMR (CDCl3) 0.73-2.20 (m, H, --(CH2)2 CH3) 4.05 (t, J=6, 2H, --OCH2 --) 7.00-8.00 (m, 6H, aromatic) TLC: Rf (silica gel, 1:9 Et2 O/pet ether)=0.63, PMA and UV, homogeneous | |
2.31 g (92%) | A. 2-Bromo-6-butoxynaphthalene An oil dispersion of 480 mg (50%, 10 mmol, Alfa) of sodium hydride was washed three times with petroleum ether then the residue covered with 5 ml of dry THF. To the resulting stirred slurry was added dropwise a solution of 2.00 g (8.97 mmol, Aldrich) of 6-bromo-2-naphthol, in 10 ml of THF over 10 minutes. The reaction mixture was stirred for 30 minutes then 1.70 g (9.23 mmol, Aldrich) of 1-iodobutane and 15 ml of sieve-dried DMF were added. The resulting solution was heated to 60 for two hours, then cooled, added to 100 ml of H2 O and extracted with 50 ml of petroleum ether. The organic extract was washed with an additional 100 ml of H2 O, dried (MgSO4) and concentrated in vacuo to give a solid. The crude material was purified by flash chromatography (15*5 cm, pet ether) to afford 2.31 g (92%) of title compound as a white solid, m.p. 48-50. 60 MHz 1 H NMR (CDCl3) 0.73-2.20 (m, 7H, --(CH2)2 CH3), 4.05 (t, J=6, 2H, --OCH2 --), 7.00-8.00 (m, 6H, aromatic). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With Benzophenone imine; tris-(dibenzylideneacetone)dipalladium(0); potassium-t-butoxide; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; In toluene; at 100℃; for 3.0h;Inert atmosphere; | Under N2, to a solution of 2- bromo-6-butoxynaphthalene (1.2 g, 4.30 mmol) in toluene (20 mL) was added diphenylmethanimine (0.94 g, 5.10 mmol), t-BuOK (1.45 g, 12.90 mmol), BINAP (1.07 g, 1.70 mmol) and Pd2(dba)3 (0.79 g, 0.80 mmol). The reaction mixture was stirred at 100C for 3 h. The reaction mixture was cooled to rt and H2O (100 mL) was added, extracted with EtOAc (40 mL x 3) and the combined organic phases were washed with brine (20 mL x 3), dried over anhydrous sodium sulfate, and concentrated in vacuo. The residue in TFA (30 mL) was refluxed for 18 h. The solvent was removed under reduced pressure. NaHCO3 (aq.) (100 mL) was added and extracted with EtOAc (50 mL x 3). The combined organic phases were washed with brine (10 mL x 3), dried over anhydrous sodium sulfate, and concentrated in vacuo. The residue was purified by Flash chromatography (eluent: 50% EtOAc in PE) to afford 6-butoxynaphthalen-2-amine (0.845 g, 94% purity, 86% yield) as a yellow oil. [M +H] + m/z 216.13, found 216.05. | |
With Benzophenone imine; tris-(dibenzylideneacetone)dipalladium(0); potassium-t-butoxide; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; In toluene; at 100℃; for 3.0h;Inert atmosphere; | Under N2, to a solution of 2- bromo-6-butoxynaphthalene (1.2 g, 4.30 mmol) in toluene (20 mL) was added diphenylmethanimine (0.94 g, 5.10 mmol), t-BuOK (1.45 g, 12.90 mmol), BINAP (1.07 g, 1.70 mmol) and Pd2(dba)3 (0.79 g, 0.80 mmol). The reaction mixture was stirred at 100C for 3 h. The reaction mixture was cooled to rt and H2O (100 mL) was added, extracted with EtOAc (40 mL x 3) and the combined organic phases were washed with brine (20 mL x 3), dried over anhydrous sodium sulfate, and concentrated in vacuo. The residue in TFA (30 mL) was refluxed for 18 h. The solvent was removed under reduced pressure. NaHCO3 (aq.) (100 mL) was added and extracted with EtOAc (50 mL x 3). The combined organic phases were washed with brine (10 mL x 3), dried over anhydrous sodium sulfate, and concentrated in vacuo. The residue was purified by Flash chromatography (eluent: 50% EtOAc in PE) to afford 6-butoxynaphthalen-2-amine (0.845 g, 94% purity, 86% yield) as a yellow oil. [M +H] + m/z 216.13, found 216.05. |
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