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Chemical Structure| 269058-50-6 Chemical Structure| 269058-50-6

Structure of 269058-50-6

Chemical Structure| 269058-50-6

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Product Details of [ 269058-50-6 ]

CAS No. :269058-50-6
Formula : C7H8BrNO2
M.W : 218.05
SMILES Code : COC1=[N+](C(C)=C(C=C1)Br)[O-]
MDL No. :MFCD28674632

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Application In Synthesis of [ 269058-50-6 ]

* 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 [ 269058-50-6 ]

[ 269058-50-6 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 126717-59-7 ]
  • [ 269058-50-6 ]
YieldReaction ConditionsOperation in experiment
70% With 3-chloro-benzenecarboperoxoic acid; In chloroform; at 5 - 50℃; for 19h; Step C. 3-Bromo-6-methoxy-2-methyl-pyridine N-oxide. A 5 C. solution of <strong>[126717-59-7]3-bromo-6-methoxy-2-methyl-pyridine</strong> (20.8 g, 103 mmol) in CHCl3 (550 mL) was treated with mCPBA (60%; 44.4 g, 154 mmol) slowly in portions over 1 h. The mixture was allowed to warm to rt, and then was heated at 50 C. for 18 h. The mixture was cooled to rt, treated with 5% aq. Na2CO3 (300 mL), and stirred for 1 h. The mixture was diluted with DCM and washed with H2O (3*). The organic layer was separated, dried (MgSO4), and concentrated to a light yellow oil (26.9 g). The oil was purified (SiO2; 0-5% 2 M NH3 in MeOH/DCM) to give the title compound (15.7 g, 70%). MS (ESI): mass calcd. for C7H8BrNO2, 216.97; m/z found, 218.2 [M+H]+. 1H NMR (CDCl3): 7.44 (d, J=8.9, 1H), 6.68 (d, J=9.0, 1H), 4.05 (s, 3H), 2.74 (s, 3H).
52% With 3-chloro-benzenecarboperoxoic acid; In chloroform; at 0 - 20℃; for 48h; To a solution of <strong>[126717-59-7]3-bromo-6-methoxy-2-methylpyridine</strong> (5 g, 24.75 mmol) in chloroform (100 mL) was added mCPBA (8.52 g, 49.37 mmol) in portions at 0 C. The resulting mixture was stirred at room temperature for 2 d. The reaction mixture was then diluted with sat. NaHCO3 solution (200 mL) and was extracted with dichloromethane (250 mL*2). The combined organic phase was washed with brine and dried over sodium sulfate. The solvent was removed under reduced pressure and the residue was purified by flash chromatography eluting with methanol in dichloromethane (1% to 5% gradient) to yield <strong>[126717-59-7]3-bromo-6-methoxy-2-methylpyridine</strong> 1-oxide as yellow solid (2.8 g, 52%). MS: m/z=217.9 [M+H]+.
 

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