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Chemical Structure| 177409-38-0 Chemical Structure| 177409-38-0

Structure of 177409-38-0

Chemical Structure| 177409-38-0

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Product Details of [ 177409-38-0 ]

CAS No. :177409-38-0
Formula : C6H7N3O4
M.W : 185.14
SMILES Code : O=C(C1=CC([N+]([O-])=O)=NN1C)OC
MDL No. :MFCD18262309
InChI Key :YOWXTKMLSGSLMK-UHFFFAOYSA-N
Pubchem ID :18916504

Safety of [ 177409-38-0 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H335
Precautionary Statements:P261-P264-P270-P271-P280-P301+P312-P302+P352-P304+P340-P305+P351+P338-P330-P332+P313-P337+P313-P362-P403+P233-P405-P501

Application In Synthesis of [ 177409-38-0 ]

* 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 [ 177409-38-0 ]

[ 177409-38-0 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 181585-93-3 ]
  • [ 74-88-4 ]
  • [ 796038-07-8 ]
  • [ 177409-38-0 ]
YieldReaction ConditionsOperation in experiment
With potassium carbonate; In N,N-dimethyl-formamide; at 20℃; for 18h; To a solution of <strong>[181585-93-3]methyl 5-nitro-1H-pyrazole-3-carboxylate</strong> (1.87 g, 10.9 mmol) in anhydrous dimethyl formamide (20 mL) was added potassium carbonate (3.02 g, 21.9 mmol) and methyl iodide (2.02 g, 0.89 mL, 14.2 mmol) and the resulting solution stirred at room temperature for 18 h. The resulting mixture was diluted with water (1*150 mL) and extracted with dichloromethane (3*75 mL). The combined organic layers were dried over magnesium sulfate. The mixture was filtered and evaporated and the residue purified by flash chromatography (silica gel, 25 g, 20% to 60% dichloromethane in hexanes) to give a mixture of 2-methyl-<strong>[181585-93-3]5-nitro-2H-pyrazole-3-carboxylic acid methyl ester</strong> and 1-methyl-5-nitro-1H-pyrazole-3-carboxylic acid methyl ester (1.64 g, 81%) as a white solid.
With potassium carbonate; In N,N-dimethyl-formamide; at 20℃; for 18h; To a solution of <strong>[181585-93-3]methyl 5-nitro-1H-pyrazole-3-carboxylate</strong> (1.87 g, 10.9 mmol) in anhydrous dimethyl formamide (20 mL) was added potassium carbonate (3.02 g, 21.9 mmol) and methyl iodide (2.02 g, 0.89 mL, 14.2 mmol) and the resulting solution stirred at room temperature for 18 h. The resulting mixture was diluted with water (1 x 150 mL) and extracted with dichloromethane (3 x 75 mL). The combined organic layers were dried over magnesium sulfate. The mixture was filtered and evaporated and the residue purified by flash chromatography (silica gel, 25g, 20% to 60% dichloromethane in hexanes) to give a mixture of 2-methyl-5-nitro-2H-pyrazo le-3 -carboxylic acid methyl ester and 1-methyl-5-nitro-1H-pyrazole-3-carboxylic acid methyl ester (1.64 g, 81 %) as a white solid.
With potassium carbonate; In N,N-dimethyl-formamide; at 20℃; for 18h; Step 12: Preparati -Methyl-<strong>[181585-93-3]5-nitro-2H-pyrazole-3-carboxylic acid methyl ester</strong> A 100-mL single-neck round-bottomed flask was charged with methyl 5-nitro-lH-pyrazole-3- carboxylate (3.89 g, 22.7 mmol), anhydrous DMF (30 ml) , potassium carbonate (6.28 g, 45.5 mmol). Mel (4.19 g, 1.85 ml, 29.6 mmol) was added and the reaction mixture was stirred at room temperature for 18h. The mixture was then diluted with water (150 mL) and extracted with DCM (3 x 75mL). The combined organic layers were dried over MgS04 and concentrated under vacuum. The crude material was purified by flash chromatography (silica gel, AnaLogix system, SF40-240g column, 10% to 50% EtOAc in hexanes) to give the desired product as mixture of isomers (3.75 g). M+ = 185.0 m/e
  • 2
  • [ 181585-93-3 ]
  • [ 74-88-4 ]
  • [ 177409-38-0 ]
YieldReaction ConditionsOperation in experiment
With potassium carbonate; In N,N-dimethyl-formamide; at 20℃; for 15h;Inert atmosphere; Into a 250-mL round-bottom flask purged with and maintained under nitrogen, was placed <strong>[181585-93-3]methyl 3-nitro-1H-pyrazole-5-carboxylate</strong> (15 g, 87.7 mmol), DMF (50 mL), potassiumcarbonate (22.4 g, 162 mmol), and CH3I (18.5 g, 130 mmol). The resulting solution was stirred for 15 h at RT and then was quenched by the addition of 50 mL of water. The resulting solution was extracted with 3x40 mL of ethyl acetate and the organic layers combined and dried over anhydrous Na2504, then concentrated under vacuum. This resulted in 17 g (crude) of the title compound as a yellow solid. MS-ESI: 186.0 (M+i).
 

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