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Chemical Structure| 1021871-36-2 Chemical Structure| 1021871-36-2

Structure of 1021871-36-2

Chemical Structure| 1021871-36-2

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Product Details of [ 1021871-36-2 ]

CAS No. :1021871-36-2
Formula : C8H5BrClN
M.W : 230.49
SMILES Code : N#CC1=CC(Cl)=CC(CBr)=C1
MDL No. :MFCD18392462

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Application In Synthesis of [ 1021871-36-2 ]

* 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 [ 1021871-36-2 ]

[ 1021871-36-2 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 1021871-35-1 ]
  • [ 1021871-36-2 ]
YieldReaction ConditionsOperation in experiment
With bromine; triphenylphosphine; In acetonitrile; at 80℃; for 4.0h; (Step 3) Triphenylphosphine (0.94 g) was suspended in acetonitrile (20 ml), bromine (0.19 ml) was added, and the mixture was stirred for 30 min. A solution (10 ml) of <strong>[1021871-35-1]3-chloro-5-(hydroxymethyl)benzonitrile</strong> (0.60 g) obtained in Step 2 in acetonitrile was added to the reaction mixture, and the mixture was stirred at 80°C for 4 hr. The reaction solution was quenched with water, and the mixture was extracted with ethyl acetate. The extract was washed with aqueous sodium hydrogen carbonate solution and then with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the obtained residue was treated by basic silica gel chromatography (ethyl acetate:hexane=1:2) to give 3-(bromomethyl)-5-chlorobenzonitrile (0.31 g) as a white solid. 1H-NMR (CDCl3) delta ppm 4.42 (2 H, s) 7.58 (2 H, d, J=1.70 Hz) 7.62 (1 H, t, J=1.79 Hz).
With phosphorus tribromide; In dichloromethane; for 1.0h; Toa solution of <strong>[1021871-35-1]5-chloro-3-(hydroxymethyl)benzonitrile</strong> (1.25 g, 7.48 mmol) in DCM(100 mL) was added neat PBr3 (2.43g, 7.48 mmol) and the mixturestirred 1 hr. The mixture was quenched by the addition of saturated NaHC03until the aqueous phase was neutral or slightly basic. The phases wereseparated and the organic phase was washed with brine (20 mL), dried (Na2SC>4),the mixture filtered and the filtrate evaporated to dryness to afford theintermediate bromide as a colourless oil. This was dissolved in acetone (100mL), thioacetic acid (569 mg, 7.48 mmol) and K2C03 (1.55g, 1 1.2 mmol) added and the mixture stirred 1 hr. DCM (100 mL) and saturatedbrine (30 mL) were then added. The phases were separated and the organic phasewas washed with more brine (10 mL), dried (Na2SC>4), the mixturefiltered and the filtrate evaporated to dryness to afford a brown oil,containing the desired title compound (880 mg, 44percent); H NMR (500MHz, CDC13) delta 2.41 (s, 3H), 4.09 (s, 2H), 7.47 - 7.59 (m, 3H).
 

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