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Chemical Structure| 673-05-2 Chemical Structure| 673-05-2

Structure of 673-05-2

Chemical Structure| 673-05-2

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Product Details of [ 673-05-2 ]

CAS No. :673-05-2
Formula : C7H9N3O
M.W : 151.17
SMILES Code : O=C(NN)CC1=NC=CC=C1
English Name :2-(Pyridin-2-yl)acetohydrazide
MDL No. :MFCD09752002

Safety of [ 673-05-2 ]

Application In Synthesis of [ 673-05-2 ]

* 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 [ 673-05-2 ]

[ 673-05-2 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 75-15-0 ]
  • [ 673-05-2 ]
  • [ 181657-56-7 ]
  • [ 74-88-4 ]
  • [ 885675-34-3 ]
YieldReaction ConditionsOperation in experiment
6% Stage #1: carbon disulfide; (1R,2R)-1-amino-2-benzyloxycyclopentane With triethylamine In ethanol for 1h; Stage #2: methyl iodide In ethanol at 20℃; Stage #3: pyridin-2-yl-acetic acid hydrazide With hydrogenchloride; sodium hydroxide more than 3 stages; 6 Example 64-((LR. 2i?)-2-Benzyloxy-cvclopentylV5-pyridin-2-ylmethyl-2.4-dihvdro-ri,2,41triazole-3- thione (Ii?, 2i?)-2-Benzyloxycyclopentylamine (0.38 g, 2.0 mmol) in EtOH (1.2 mL) was treated with triethylamine (280 μL, 2.0 mmol) followed by the dropwise addition of carbon disulfide (120μL, 2.0 mmol). The suspension was stirred for Ih, then methyl iodide (124μL, 2.0 mmol) was added and the mixture was stirred at ambient temperature overnight. The mixture was concentrated, the oily residue was dissolved in EtOH (4 mL), and pyridin-2-yl-acetic acid hydrazide (0.51 g, 1.8 mmol) was added. The mixture was heated in a microwave reactor for 50 minutes at 150 °C. The mixture was concentrated and the residue was dissolved in MeOH (8 mL) and 2% NaOH(aq) (4mL) and heated to reflux for 4h. The reaction was allowed to cool to ambient temperature and 2M HCl was added until pH 7. The MeOH was evaporated and the aqueous phase was extracted with CHCl3. The organic phases were combined, dried (Na2SO4) and concentrated. The crude oil was purified by column chromatography (CHCl3) to yield the title compound (35 mg, 6%). 1H NMR (CDCl3) δ ppm 11.92 (IH, br s), 8.46 (IH, m), 7.50 (IH, s), 7.25-7.15 (3H, m), 7.15-7.04 (4H, m), 5.05 (IH, dt, J=6.8 Hz, 14.0 Hz), 4.45 (IH, m), 4.39 (IH, d, J=12.4 Hz), 4.27 (IH, d, J=12.4 Hz), 4.22 (IH, d, 1=172 Hz), 4.17 (IH, d, J=17.2 Hz), 2.65-2.52 (IH, m), 2.20-2.08 (IH, m) 1.93-1.80 (IH, m), 1.67-1.48 (3H, m). EPO MS (ESI) m/z 367 (M+l).
 

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