Sulfuric Acid → HCID 21459075, compound

HRID 1781834Notes

Reaction equation

HRID 1781834 reaction equation
[N+:1]([C:4]1[CH:10]=[C:9]([N+:11]([O-:13])=[O:12])[CH:8]=[C:6]([OH:7])[C:5]=1[OH:14])([O-:3])=[O:2].S(=O)(=O)(O)O>C(OC(=O)CC)(=O)CC>[C:6]([O:7][C:6]1[CH:8]=[C:9]([N+:11]([O-:13])=[O:12])[CH:10]=[C:4]([N+:1]([O-:3])=[O:2])[C:5]=1[O:14][C:5](=[O:14])[CH2:4][CH3:10])(=[O:7])[CH2:8][CH3:9]

Participants

4

Reactant 2

HCID 1118Sulfuric AcidHCID 38702033,5-Dinitrocatechol

Product 1

HCID 21459075HCID 21459075, compound

Reagents, catalysts & solvents 1

HCID 31263Propionic anhydrideSolvent

Procedure

A solution of 2.0 g of 3,5-dinitropyrocatechol in 25 ml of propionic anhydride is heated at 110° for 18 hours in the presence of a catalytic amount of conc. sulfuric acid, the excess anhydride is distilled off at 70° in a high vacuum (1.33 Pa), the residue is dissolved in methylene chloride, washed with water, dried over sodium sulfate, filtered and evaporated. There is obtained 1,2-dipropionyloxy-3,5-dinitrobenzene of m.p. 74°-76° (from methylene chloride/petroleum ether).

Workup

  1. distillationthe excess anhydride is distilled off at 70° in a high vacuum (1.33 Pa)
  2. dissolutionthe residue is dissolved in methylene chloride
  3. washwashed with water
  4. dry with materialdried over sodium sulfate
  5. filtrationfiltered
  6. customevaporated

Sources & evidence

ORD record
ord-0c8993df9b0641b8ace69a9cf1006bc2
Source dataset
uspto-grants-1997_05
Patent number
US05633371

Reaction notes

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