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Structure of 947255-02-9

Chemical Structure| 947255-02-9

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Product Details of [ 947255-02-9 ]

CAS No. :947255-02-9
Formula : C7H7FN2O2
M.W : 170.14
SMILES Code : O=[N+]([O-])C1C(NC)=CC=CC=1F
MDL No. :MFCD12149677

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Application In Synthesis of [ 947255-02-9 ]

* 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 [ 947255-02-9 ]

[ 947255-02-9 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 19064-24-5 ]
  • [ 74-89-5 ]
  • [ 947255-02-9 ]
YieldReaction ConditionsOperation in experiment
93% In methanol; at 20℃; for 3.5h;Cooling with ice; A methanol solution of 40% methyl amine (12.2 mL, 119 mmol) was added dropwise to a methanol solution (39.5 mL) of <strong>[19064-24-5]2,6-difluoronitrobenzene</strong> (7.90 g, 49.7 mmol) under ice cooling, and the mixture was stirred at the same temperature for 0.5 hours, and then stirred at room temperature for 3 hours. The reaction solution was poured into ice water, and precipitated crystals were collected by filtration and washed with water. The resulting crystals were dried at 50 C., thereby obtaining 7.84 g of a red, powdery target compound (yield: 93%).1H-NMR (CDCl3) δ ppm: 2.98 (3H, d, J=5.1 Hz), 6.43 (1H, dd, J=11.6 Hz, 8.9 Hz), 6.57 (1H, d, 8.9 Hz), 7.2-7.4 (2H, m)
75% In methanol; at 0 - 20℃; for 3.5h; To a solution of lnt-36 (1.0 g, 6.3 mmol) in MeOH (5 mL) was added 33% methyl amine (1.3 g, 13.8 mmol) in MeOH at 0 C, and the mixture was stirred at the same temperature for 0.5 h, then at room temperature for 3 h. After completion of the reaction indicated by LCMS, the reaction solution was poured into ice water, and precipitated crystals were collected by filtration and washed with water. The residue was dissolved in DCM, dried over Na2S04 and filtered. The filtrate was concentrated in vacuum to give lnt-37 (800 mg, 75%). LCMS (Agilent LCMS 1200-6120, Column: Halo C18 (30 mm *4.6 mm*2.7 pm); Column Temperature: 40 C; Flow Rate: 3.0 ml/min; Mobile Phase: from 95% [water + 0.05% TFA] and 5% [CCN + 0.05% TFA] to 0% [water + 0.05% TFA] and 100% [CCN + 0.05% TFA] in 0.8 min, then under this condition for 0.4 min, finally changed to 95% [water + 0.05% TFA] and 5% [CH3CN + 0.05% TFA] in 0.01 min and under this condition for 0.2 min). Purity: 100%; Rt = 0.74 min; MS Calcd. : 171.1; MS Found: 170.1 [M+H]+.
In dichloromethane; at 0℃; for 3h; To a stirred solution of l,3-difluoro-2-nitrobenzene 1 (14.0 g, 88.1 mmol) in DCM (1568) (150 mL) at 0 C, was added methyl amine (7.00 g, 228 mmol) and the mixture was stirred for 3h. Progress of the reaction was monitored by TLC. After completion, the reaction mixture was quenched with ice water (50 mL). The organic layer was separated, dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure to afford the cnide title compound (9.00 g). 1H-NMR (400 MHz, DMSO-d) d 8.29 (s, IH), 7.41 (dd, J= 4.24, 8.73 Hz, I H), 7.01 (dd, J= 8.73, 10.22 Hz, IH), 4.09 (s, 3H).
 

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