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Chemical Structure| 4634-14-4 Chemical Structure| 4634-14-4

Structure of 4634-14-4

Chemical Structure| 4634-14-4

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Product Details of [ 4634-14-4 ]

CAS No. :4634-14-4
Formula : C13H11NO2
M.W : 213.23
SMILES Code : O=C(OC)C1=CC=NC(C2=CC=CC=C2)=C1
MDL No. :MFCD07357447

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Application In Synthesis of [ 4634-14-4 ]

* 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 [ 4634-14-4 ]

[ 4634-14-4 ] Synthesis Path-Downstream   1~3

  • 1
  • [ 55240-51-2 ]
  • [ 18107-18-1 ]
  • [ 4634-14-4 ]
YieldReaction ConditionsOperation in experiment
In methanol; hexane; benzene; at 0 - 20℃; for 8h; A solution of <strong>[55240-51-2]2-phenylisonicotinic acid</strong> (459 mg, 2.30 mmol) in 9:1 benzene/methanol (20 mL) was cooled to 0 C., and treated with the dropwise addition of a 2.0 M hexane solution of (trimethylsilyl)diazomethane (1.15 mL, 2.30 mmol). The mixture was allowed to come to room temperature and stirred for 6 h. Analysis by TLC indicated incomplete reaction, so the mixture was treated with additional (trimethylsilyl)diazomethane solution (230 muL, 0.23 mmol), and the reaction was stirred for an additional 2 h. TLC of the mixture remained unchanged. The solvent was stripped, and the residue was partitioned between ethyl acetate and saturated sodium bicarbonate. The layers were separated, the organic phase was washed 2* with saturated sodium bicarbonate, the combined aqueous phases were extracted with ethyl acetate, and the combined organic phases were washed with brine, dried over sodium sulfate, and concentrated in vacuo. The residue was purified over silica gel, eluding with 20% ethyl acetate/heptane, to yield 372 mg of methyl 2-phenylisonicotinate as a colorless oil. 1H NMR (400 MHz, CDCl3) delta ppm 8.83 (d, J=5.27 Hz, 1 H), 8.29 (s, 1 H), 8.04 (d, J=7.03 Hz, 2 H), 7.77 (d, J=3.52 Hz, 1 H), 7.51-7.42 (m, 3 H), 3.98 (s, 3 H).
In methanol; hexane; benzene; at 0 - 20℃; Preparation H1, Step 2: A solution of <strong>[55240-51-2]2-phenylisonicotinic acid</strong> (459 mg, 2.30 mmol) in 9:1 benzene/methanol (20 mL) was cooled to 0 C., and treated with the dropwise addition of a 2.0 M hexane solution of (trimethylsilyl)diazomethane (1.15 mL, 2.30 mmol). The mixture was allowed to come to room temperature and stirred for 6 h. Analysis by TLC indicated incomplete reaction, so the mixture was treated with additional (trimethylsilyl)diazomethane solution (230 muL, 0.23 mmol), and the reaction was stirred for an additional 2 h. TLC of the mixture remained unchanged. The solvent was stripped, and the residue was partitioned between ethyl acetate and saturated sodium bicarbonate. The layers were separated, the organic phase was washed 2* with saturated sodium bicarbonate, the combined aqueous phases were extracted with ethyl acetate, and the combined organic phases were washed with brine, dried over sodium sulfate, and concentrated in vacuo. The residue was purified over silica gel, eluding with 20% ethyl acetate/heptane, to yield 372 mg of methyl 2-phenylisonicotinate as a colorless oil. 1H NMR (400 MHz, CDCl3) delta ppm 8.83 (d, J=5.27 Hz, 1 H), 8.29 (s, 1 H), 8.04 (d, J=7.03 Hz, 2 H), 7.77 (d, J=3.52 Hz, 1 H), 7.51-7.42 (m, 3 H), 3.98 (s, 3 H).
  • 2
  • [ 67-56-1 ]
  • [ 55240-51-2 ]
  • [ 4634-14-4 ]
YieldReaction ConditionsOperation in experiment
72% With sulfuric acid;Heating / reflux; <strong>[55240-51-2]2-phenyl-4-carboxypyridine</strong> (3 g, 15 mmol) was refluxed overnight in MeOH (70 ml) and H2SO4 (4 ml). After evaporation of the solvent, water (100 ml) was added and the mixture was neutralized with saturated NaHCO3 solution. The aqueous phase was then extracted with CH2Cl2 (2x100 ml). The combined organic fractions were washed with water (100 ml), brine (50 ml) and dried over MgSO4. The crude compound was then flash chromatographed (SiO2, CH2Cl2) to afford 2.3 g (72%) of the titled compound as a colourless oil.
  • 3
  • [ 4634-14-4 ]
  • [ 55240-51-2 ]
 

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