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Chemical Structure| 52446-52-3 Chemical Structure| 52446-52-3

Structure of 52446-52-3

Chemical Structure| 52446-52-3

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Product Details of [ 52446-52-3 ]

CAS No. :52446-52-3
Formula : C15H15BrO
M.W : 291.18
SMILES Code : BrCCC1=CC=C(OCC2=CC=CC=C2)C=C1
MDL No. :MFCD08694249

Safety of [ 52446-52-3 ]

Application In Synthesis of [ 52446-52-3 ]

* 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 [ 52446-52-3 ]

[ 52446-52-3 ] Synthesis Path-Downstream   1~3

  • 1
  • [ 61439-59-6 ]
  • [ 52446-52-3 ]
YieldReaction ConditionsOperation in experiment
73% With carbon tetrabromide; triphenylphosphine; In dichloromethane; at 0 - 20℃; for 2h; Example 38(2S)-2-amino-5-{'2-f4-(2-fluoroethoxv)phenvllethvl)hexanedioic acid38 a) 1 -{Benzyloxy)-4-(2-bromoethyl)benzene; To a cooled (0°C) solution of 3.00 g 4-benzyloxy phenethyl alcohol (13.1 mmol) in dichloromethane (132 mL) were added subsequently 5.17 g of triphenylphosphine (19.7 mmol) and 6.54 g carbon tetrabromide (19.7 mmol). The resuling mixture was stirred for 2 h at room temperature and was then evaporated. The residue was triturated with diethyl ether at -20°C for 30 minutes, and then all solides were removed by filtration, and the filtrate was concentrated in vacuo. The residue was subjected to column chromatography on silica gel (1 percent > 10 percent ethyl acetate in hexane) to give 2.80 g of the target compound (73 percent yield) as a pale yellow oil crystallising upon standing. H-NMR (400 MHz, CHLOROFORM-d): delta [ppm]= 3.1 1 (t, 2 H), 3.54 (t, 2 H), 5.06 (s, 2 H), 6.91 - 6.98 (m, 2 H), 7.10 - 7.18 (m, 2 H), 7.30 - 7.48 (m, 5 H).
38.4% With phosphorus tribromide; In tetrahydrofuran; at 0 - 20℃; for 0.5h; 1-Bromo-2-(4-benzyloxyphenyl)ethane (LWO02060) To a stirred solution of <strong>[61439-59-6]2-(4-benzyloxyphenyl)ethanol</strong> (2.02 g, 8.848 mmol) in anhydrous distilled THF (30 mL) at ice/water temperature and under an atmosphere of nitrogen was added phosphorus tribromide (2.47 g, 8.848 mmol). After stirring at room temperature for 30 min, the reaction mixture was evaporated and the pale yellow liquid thus obtained was diluted with ethyl acetate (100 mL). The organic layer that separated was washed with brine (100 mL, 4*50 mL), dried (MgSO4) and evaporated to give a light orange brown syrup (3.21 g) which turned light yellow upon standing overnight. This crude was fractionated by flash chromatography (chloroform/ethyl acetate, 1:2 to 1:1, gradient) and the first fraction that separated gave 1-bromo-2-(4-benzyloxyphenyl)ethane as a yellow solid (990 mg, 3.40 mmol, 38.4percent); Rf 0.82 (neat ethyl acetate), 0.68 (S.M.); deltaH (400 MHz, DMSO-d6) 3.04 (2H, t, J=7.2 Hz, C2CH2Br), 3.67 (2H, t, J=7.4 Hz, CH2C2Br), 5.08 (2H, S, CH2O), 6.95 (2H, AA'BB'), 7.20 (2H, AA'BB') and 7.30-7.48 (5H, m, Bn); LRMS (FAB+): 289.9(9), 73.0(100), (FAB-) 233.9(100).
  • 2
  • [ 61439-59-6 ]
  • [ 52446-52-3 ]
  • C21H26N2O5 [ No CAS ]
  • 3
  • [ 558-13-4 ]
  • [ 61439-59-6 ]
  • [ 52446-52-3 ]
YieldReaction ConditionsOperation in experiment
With triphenylphosphine; Step 2: To a solution of 4-benzyloxyphenethyl alcohol (8.29 g) and carbon tetrabromide (24.1 g) in ether (150 ml) is portionwise added triphenylphosphine (19.0 g) and the resulting mixture stirred for about 3 hours. The supernatent is decanted, the solid washed with ether and the combined organic solution concentrated in vacuo. The crude product is purified by passing it through a silica plug to give 4-benzyloxyphenethyl bromide.
 

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