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Chemical Structure| 1169788-30-0 Chemical Structure| 1169788-30-0

Structure of 1169788-30-0

Chemical Structure| 1169788-30-0

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Product Details of [ 1169788-30-0 ]

CAS No. :1169788-30-0
Formula : C8H7F3N2O2
M.W : 220.15
SMILES Code : NC1=CC([N+]([O-])=O)=CC(C(F)(F)F)=C1C

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Application In Synthesis of [ 1169788-30-0 ]

* 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 [ 1169788-30-0 ]

[ 1169788-30-0 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 54396-44-0 ]
  • [ 1169788-30-0 ]
YieldReaction ConditionsOperation in experiment
25% Example 1503-Amino-2-methyl-5-nitrobenzotrifluoride70percent HNO3 (1.96 mL, 32.6 mmol, 1.1 equiv) was added dropwise to a mixture of <strong>[54396-44-0]3-amino-2-methylbenzotrifluoride</strong> (5.0 g, 28.55 mmol, 1 equiv) in 30 mL of fuming H2SO4 at 0° C. Then the mixture was left to reach room temperature and stirred for 1 hour. Poured into ice and the aqueous phase was extracted with EtOAc. The organic layer was separated, washed with saturated NaHCO3 and concentrated. The residue was purified by column chromatography on silica gel using EtOAc/hexanes (3:7) as eluent to give 1.6 g of product (25percent) as a yellow solid.1H NMR (CDCl3, 300 MHz): delta 7.91 (s, 1H), 7.67 (s, 1H), 4.13 (br. s, 2H), 2.31 (s, 3H). m/z=221.1 (M+H)+.
With sulfuric acid; nitric acid; at 15 - 20℃;Cooling with ice; First Step [Show Image] To concentrated sulfuric acid (30 mL), <strong>[54396-44-0]2-methyl-3-trifluoromethylaniline</strong> (5.0 g, 28.5 mmol) was gradually added under ice cooling and fuming nitric acid (1.35 mL, 32.6 mmol) was added dropwise so that the inner temperature does not become higher than 15°C, followed by stirring for one hour while maintaining the liquid temperature at 15 to 20°C. The reaction mixture was gradually added to ice water and then extracted with ethyl acetate. The organic layer was washed with water and dried over anhydrous sodium sulfate, and then the solvent was distilled off under reduced pressure. The resulting residue was purified by silica gel chromatography (ethyl acetate:n-hexane = 1:10 to 1:1) to obtain 3.80 g of 2-methyl-5-nitro-3-trifluoromethylaniline. 1H-NMR (400 MHz, DMSO-d6) d: 2.21 (d, 3H, J = 1.2 Hz), 6.10 (br, 2H), 7.56 (d, 1H, J = 2.4 Hz), 7.74 (d, 1H, J = 2.4 Hz).
 

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