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Chemical Structure| 871836-50-9 Chemical Structure| 871836-50-9

Structure of 871836-50-9

Chemical Structure| 871836-50-9

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Product Details of [ 871836-50-9 ]

CAS No. :871836-50-9
Formula : C6H5N3O
M.W : 135.12
SMILES Code : [O-][N+]1=CC=C(NN=C2)C2=C1

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Application In Synthesis of [ 871836-50-9 ]

* 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 [ 871836-50-9 ]

[ 871836-50-9 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 871836-50-9 ]
  • [ 871836-51-0 ]
YieldReaction ConditionsOperation in experiment
With trichlorophosphate; at 110℃; for 18h; A solution of 1H-pyrazolo[4,3-c]pyridine N-oxide (0.4 g, 3 mmol) in phosphorous oxychloride (10 mL) was heated at 110 °C for 18 hours. The cool reaction mixture was evaporated under reduced pressure and the residue carefully dissolved in water (30 mL). The solution was basified with 10 percent w/v aqueous potassium carbonate solution and extracted with ethyl acetate (3 X 50 mL). The combined organic extracts were dried (MgS04) and evaporated under reduced pressure to give the title compound as a yellow solid, 0.1 g. LRMS (APCI+): m/z [M+H]+ 154
  • 2
  • [ 871836-50-9 ]
  • [ 871836-51-0 ]
  • [ 1206979-33-0 ]
YieldReaction ConditionsOperation in experiment
With trichlorophosphate; for 3h;Heating / reflux; (2) To the compound obtained in the above step (1) (1.4 g) was added phosphorus oxychloride (30 mL) and the mixture was refluxed under heating for 3 hours. The reaction mixture was concentrated and to the residue was added an aqueous saturated sodium hydrogencarbonate solution. The mixture was extracted with ethyl acetate and the extract was dried over magnesium sulfate and concentrated to give a mixture of 4-chloro-1H-pyrazolo[4,3-c]pyridine and 6-chloro-1H-pyrazolo[4,3-c]pyridine (0.81 g, yield: 51 percent). MS(APCI)m/z; 154/156 [M+H]+
 

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