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Chemical Structure| 25574-19-0 Chemical Structure| 25574-19-0

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Chemical Structure| 25574-19-0

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Product Details of [ 25574-19-0 ]

CAS No. :25574-19-0
Formula : C9H10BrClO
M.W : 249.53
SMILES Code : OC(C1=CC=C(Br)C=C1)CCCl
MDL No. :MFCD14531429

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Application In Synthesis of [ 25574-19-0 ]

* 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.

  • Downstream synthetic route of [ 25574-19-0 ]

[ 25574-19-0 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 31736-73-9 ]
  • [ 25574-19-0 ]
YieldReaction ConditionsOperation in experiment
100% With sodium tetrahydroborate; In tetrahydrofuran; at 0 - 20℃;Inert atmosphere; To a solution of sodium borohydride (3.8 g, 100 mmol) in tetrahydrofuran (100 mL) was added a solution of l-(4-bromo-phenyl)"3-chloro-propan-l-one (25 g, 100 mmol) dropwise at 0C under nitrogen atmosphere. The mixture was warmed to room temperature and stirred for 2 hours. The reaction mixture was concentrated to about 50 mL under reduced pressure and diluted with water. Extractive workup was performed with ethyl acetate and the extracts were dried over anhydrous sodium sulfate. After concentration, the residue was purified by flash column chromatography on silica gel (hexane/ethyl acetate=3/l as an eluant) to yield l-(4-bromo-phenyl)- 3-chloro-propan-l-ol (25 g, lOOmmol, 100%) as yellow oil.
With sodium tetrahydroborate; In tetrahydrofuran; water; at 20℃; for 2h; EXAMPLE 59; {3- (3-Chloro-phenoxy)-3- [4- (lH-pyrazol-4-vl)-phenYl]-propyl}-methyl-amine; 59A. 1-f4-Bromo-phenyl)-3-chloro-propan-1-ol; (J. Med. Chem, 2004, 47, 3924-3926) To a solution of 1-(4-Bromo-phenyl)-3-chloro-propan-1-one (1g, 4. 04mmol) in tetrahydrofuran (9ml) and water (0. 58ml) was added sodium borohydride (0. 16g, 4. 28mmol). The reaction mixture was stirred at room temperature for 2 hours, quenched with careful addition of water and extracted with ethyl acetate. The organic layers were separated, dried (MgS04), filtered and concentrated to afford the title compound, which was used in the next step without further purification. LC/MS : (PS-A2) Rt 3.07 [M+H] +No Ionization.
With sodium tetrahydroborate; In methanol; for 1h;Cooling with ice; To a solution of Compound 89 (1.00 g, 4.04 mmol) in methanol (20 ml) was added sodium borohydride (306 mg, 8.08 mmol) under ice cooling, and the reaction mixture was stirred under ice cooling for 1 hour. The reaction mixture was quenched with a saturated aqueous solution of ammonium chloride, and then extracted with ethyl acetate, which was then dried over sodium sulfate. The solvent was removed under reduced pressure, the obtained residue was dissolved in THF (20 ml), to which was then added KOt-Bu (1.43 g, 12.8 mmol) under ice cooling, and the resulting mixture was stirred at room temperature for 2 hours. The reaction mixture was quenched with a saturated aqueous solution of ammonium chloride, and then extracted with ethyl acetate, which was then washed with saturated aqueous NaCl. The organic layer was dried over sodium sulfate, and the solvent was removed under reduced pressure. The obtained residue was purified by silica gel column chromatography to obtain Compound 91 (376 mg, 1.77 mmol, 44% in 2 steps) as a yellow oil. To Compound 91 (100 mg, 0.469 mmol) were added dioxane (1 ml), Compound 54 (179 mg, 0.704 mmol), PdCl2(dppf)CH2Cl2 (38.3 mg, 0.047 mmol), and potassium acetate (184 mg, 1.88 mmol), and the reaction mixture was stirred at 100C for 2 hours. The reaction mixture was purified by silica gel column chromatography to obtain Compound 92 (104 mg, 0.400 mmol, 85%). Compound 92; 1H-NMR (CDCl3)delta: 1.35 (s, 12H), 2.61-2.65 (m, 1H), 3.00-3.08 (m, 1H), 4.65-4.68 (m, 1H), 4.82-4.84 (m, 1H), 5.83 (t, J = 7.5 Hz, 1H), 7.43 (d, J = 7.8 Hz, 2H), 7.84 (d, J = 7.9 Hz, 2H).
With sodium tetrahydroborate; water; In tetrahydrofuran; at 20℃; for 2h; EXAMPLE 59; {3-(3-Chloro-phenoxy)-3-[4-(1H-pyrazol-4-yl')-phenv?-propyl}-methyl-amine; 59A. 1-(4-Bromo-phenyl)-3-chloro-propan-1-ol; (J.Med.Chem, 2004,47,3924-3926); To a solution of 1-(4-Bromo-phenyl)-3-chloro-propan-1-one (1g, 4.04mmol) in tetrahydrofuran (9ml) and water (0.58ml) was added sodium borohydride (0.16g, 4.28mmol). The reaction mixture was stirred at room temperature for 2 hours, quenched with careful addition of water and extracted with ethyl acetate. The organic layers were separated, dried (MgStheta4), filtered and concentrated to afford the title compound, which was used in the next step without further purification. LC/MS: (PS-A2) Rt 3.07 [M+H]+ No Ionization.

 

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