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Chemical Structure| 68707-72-2 Chemical Structure| 68707-72-2

Structure of 68707-72-2

Chemical Structure| 68707-72-2

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Product Details of [ 68707-72-2 ]

CAS No. :68707-72-2
Formula : C7H8N2O3
M.W : 168.15
SMILES Code : OC1=C(C)C(C)=NC=C1[N+]([O-])=O
MDL No. :MFCD18803386
Boiling Point : No data available

Safety of [ 68707-72-2 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319
Precautionary Statements:P501-P270-P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313-P301+P312+P330

Application In Synthesis of [ 68707-72-2 ]

* 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 [ 68707-72-2 ]

[ 68707-72-2 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 68707-71-1 ]
  • [ 68707-72-2 ]
YieldReaction ConditionsOperation in experiment
With sulfuric acid; nitric acid; at 60 - 75℃; for 3.25h; Anhydrous potassium acetate (49 g, 0.5 mol) was added to a solution of2,3-dimethyl-4-nitropyridine (45.6 g, 0.3 mol) prepared in Step 2 in 300 ml of acetic anhydride and then refluxed under stirring for 16 hours. The reaction mixture was cooled to room temperature and then 400 ml of anhydrous ether was added thereto. The reaction mixture was stirred for 1 hour, filtered with Celite, and then concentrated under reduced pressure to give 4-acetoxy-2,3-dimethylpyridine (45 g, 91%). The resulting residue was added to 250 ml of water, refluxed under stirring for 4 hours, and then left overnight at room temperature. The reaction mixture was concentrated under EPO <DP n="56"/>reduced pressure to give 32.6 g of <strong>[68707-71-1]2,3-dimethyl-4-hydroxypyridine</strong> as a liquid form. The liquid product was dissolved in 120 ml of concentrated sulfuric acid and heated to 600C. A mixture of 90% nitric acid (40 ml) and sulfuric acid (30 ml) was slowly added to the reaction mixture for 45 minutes, while maintaining the temperature at 60-650C. The reaction mixture was heated for 2 hours at 65C and then for 30 minutes at 75C. The reaction mixture was cooled to room temperature and then added to ice water. The resulting solution was brought to pH 5-6 with ammonium hydroxide to give a pale yellow solid. The resulting solid was filtered, washed with cold water, and then dried at 80 ~ 900C to give 34.5 g of the titled compound.[757] * H-NMR (CDCl3) delta 2.54(s, 3H), 2.87(s, 3H), 9.35(s, IH)
 

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