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Chemical Structure| 3896-29-5 Chemical Structure| 3896-29-5

Structure of 3896-29-5

Chemical Structure| 3896-29-5

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Product Details of [ 3896-29-5 ]

CAS No. :3896-29-5
Formula : C8H7F2NO
M.W : 171.14
SMILES Code : CC(=O)NC1=C(F)C=CC=C1F
MDL No. :MFCD00119485
Boiling Point : No data available

Safety of [ 3896-29-5 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319
Precautionary Statements:P501-P270-P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313-P301+P312+P330

Application In Synthesis of [ 3896-29-5 ]

* 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 [ 3896-29-5 ]

[ 3896-29-5 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 3896-29-5 ]
  • [ 1262198-07-1 ]
YieldReaction ConditionsOperation in experiment
73% With N-Bromosuccinimide; sulfuric acid; at 20℃; N-(2,6-difluorophenyl)acetamide (2, 8.77 g, 51.2 mmol) was dissolved in Sulfuric acid (41.0 mL, 769 mmol) and N-bromosuccinimide (9.12 g, 51.2 mmol) was added portion wise at rt. The reaction was stirred overnight at RT and quenched slowly into ice water (400 mL) with stirring. The solids were collected by suction filtration and washed with water, hexane, hexane + EtOAc (8+2) and hexane again. The solids were taken up in ethanol (30.0 mL) and conc. HCl (30 mL) and heated to reflux for 3h. The mixture was poured into ice (400 g), neutralized with solid NaOH and the solids were collected by suction filtration, washed with water and dried in vacuo to yield 3-bromo-2,6-difluoroaniline (3, 7.83 g, 37,6 mmol, 73% yield). (0997) Analytical data: (0998) 1H NMR (200 MHz, CDCl3) δ 6.95- 6.59 (m, 2H), 3.84 (s, 2H); (0999) 13C NMR (50 MHz, CDCl3) δ 152.2 (dd, J = 133.8, 6.5 Hz), 147.5 (dd, J = 132.7, 6.9 Hz), 125.4 (t, J = 16.9 Hz), 122, 119.6 (d, J = 8.4 Hz), 111.7 (dd, J = 19.9, 3.1 Hz), 103.8 (dd, J = 19.2, 3.8 Hz).
With N-Bromosuccinimide; sulfuric acid; trifluoroacetic acid; at 20℃; 2,6-difluoro-acetanilide (3.02 g, 17.3 mmol) is taken-up in TFA (15 mL) and conc. H2SO4 (20 mL). NBS (3.20 g, 17.9 mmol) is added in small portions and the resulting mixture is stirred at rt overnight. The reaction mixture is poured into ice water and the resulting precipitate is collected by filtration, washed with H2O and dried in vacuo to give the bromide IM-1a (HPLC-MS: tRet.=0.79 min; MS (M+H)+=250/252) which is used without further purification
 

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