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Chemical Structure| 856167-67-4 Chemical Structure| 856167-67-4

Structure of 856167-67-4

Chemical Structure| 856167-67-4

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Product Details of [ 856167-67-4 ]

CAS No. :856167-67-4
Formula : C11H12BrN
M.W : 238.12
SMILES Code : CC(C)CC1=C(C=C(Br)C=C1)C#N
MDL No. :MFCD18910889
InChI Key :LNXBMWBKHDYMAY-UHFFFAOYSA-N
Pubchem ID :51358165

Safety of [ 856167-67-4 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302
Precautionary Statements:P280-P305+P351+P338

Application In Synthesis of [ 856167-67-4 ]

* 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.

  • Upstream synthesis route of [ 856167-67-4 ]
  • Downstream synthetic route of [ 856167-67-4 ]

[ 856167-67-4 ] Synthesis Path-Upstream   1~4

  • 1
  • [ 288251-97-8 ]
  • [ 856167-67-4 ]
YieldReaction ConditionsOperation in experiment
36 g
Stage #1: With hydrogen bromide In water; acetonitrile at 0℃;
Stage #2: With sodium nitrite In water; acetonitrile for 0.5 h;
Stage #3: With copper(I) bromide; copper(ll) bromide In water; acetonitrile at 20℃; for 16 h;
To a solution of 5-amino-2-isobutylbenzonitrile (D43) (34 g) in acetonitrile (500 mL) was added HBr (24.37 mL) at 0° C. Then a solution of sodium nitrite (16.16 g) in water (50 mL) was added to the reaction mixture. After stirring for 30 min, copper(II) bromide (87 g) and copper(I) bromide (5.60 g) were added to the reaction mixture. The mixture was stirred at room temperature for 16 h. The reaction was quenched with saturated aqueous sodium bicarbonate solution. The mixture was extracted with EA. The combined organic solution was dried over anhydrous sodium sulphate. After filtration and concentration, the residue was purified by column chromatography to give 5-bromo-2-(2-methylpropyl)benzonitrile (D44) (36 g) as a colorless oil. δH (CDCl3, 400 MHz): 0.96 (6H, d), 1.98 (1H, m), 2.69 (2H, d), 7.18 (1H, d), 7.64 (1H, dd), 7.55 (1H, d).
579 mg With hydrogen bromide; copper(I) bromide; copper(ll) bromide; sodium nitrite In water; acetonitrile at 20℃; Cooling with ice (3)
5-bromo-2-isobutylbenzonitrile
The compound obtained in the Example 59(2) (447 mg) was dissolved in acetonitrile (7 ml), and 48percent hydrobromic acid (0.32 ml) was added to the solution under ice cooling.
Subsequently, sodium nitrite aqueous solution (213 mg of NaNO2 was dissolved in 0.7 ml of water) prepared separately was added, and the resulting mixture was stirred at the same temperature for 30 minutes.
After adding CuBr (74 mg) and CuBr2 (1.15 g), the mixture was warmed to room temperature and was further stirred overnight.
After the addition of diethyl ether and saturated sodium bicarbonate aqueous solution to the reaction solution, the resulting solution was extracted/separated.
The resulting organic layer was washed with saturated brine.
The solvent was evaporated under reduced pressure to obtain the title compound (579 mg) as a colorless oily substance.
References: [1] Patent: WO2011/113309, 2011, A1, . Location in patent: Page/Page column 41-42.
[2] Patent: US2011/269738, 2011, A1, . Location in patent: Page/Page column 31.
[3] Patent: WO2011/134280, 2011, A1, . Location in patent: Page/Page column 61; 62.
[4] Patent: US2013/12491, 2013, A1, . Location in patent: Paragraph 0229; 0230.
[5] Patent: US2013/217663, 2013, A1, . Location in patent: Paragraph 0438.
  • 2
  • [ 121554-10-7 ]
  • [ 856167-67-4 ]
References: [1] Patent: WO2005/58848, 2005, A1, . Location in patent: Page/Page column 104.
  • 3
  • [ 134604-07-2 ]
  • [ 856167-67-4 ]
References: [1] Patent: WO2011/113309, 2011, A1, .
[2] Patent: US2011/269738, 2011, A1, .
[3] Patent: WO2011/134280, 2011, A1, .
[4] Patent: US2013/12491, 2013, A1, .
[5] Patent: US2013/217663, 2013, A1, .
  • 4
  • [ 288251-96-7 ]
  • [ 856167-67-4 ]
References: [1] Patent: WO2011/113309, 2011, A1, .
[2] Patent: US2011/269738, 2011, A1, .
[3] Patent: WO2011/134280, 2011, A1, .
[4] Patent: US2013/12491, 2013, A1, .
[5] Patent: US2013/217663, 2013, A1, .
 

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