Hydrogen Peroxide → 2-(4-chlorophenyl)-4,4a,5,6-tetrahydrothieno[2',3':2,3]thiepino[4,5-c]pyridazin-3(2H)-one 7-oxide

HRID 1681839Notes

Reaction equation

HRID 1681839 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:13](=[O:14])[CH2:12][CH:11]3[CH2:15][CH2:16][S:17][C:18]4[S:22][CH:21]=[CH:20][C:19]=4[C:10]3=[N:9]2)=[CH:4][CH:3]=1.[OH:23]O>C(O)(=O)C>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:13](=[O:14])[CH2:12][CH:11]3[CH2:15][CH2:16][S:17](=[O:23])[C:18]4[S:22][CH:21]=[CH:20][C:19]=4[C:10]3=[N:9]2)=[CH:4][CH:3]=1

Participants

4

Reactant 2

HCID 784Hydrogen Peroxide3×HCID 106414982-(4-chlorophenyl)-4,4a,5,6-tetrahydrothieno[2',3':2,3]thiepino[4,5-c]pyridazin-3(2H)-one

Product 1

HCID 190167982-(4-chlorophenyl)-4,4a,5,6-tetrahydrothieno[2',3':2,3]thiepino[4,5-c]pyridazin-3(2H)-one 7-oxide

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Procedure

To a solution of 5.4 g of 2-(4-chlorophenyl)-4,4a,5,6-tetrahydrothieno[2',3':2,3]thiepino[4,5-c]pyridazin-3(2H)-one in 60 ml of acetic acid is added 3.5 ml of 30% aqueous hydrogen peroxide solution under ice-cooling and stirred at the same temperature for 3 hours. Furthermore, to the solution is added 2 ml of 30% aqueous hydrogen peroxide solution and stirred for 2 hours. To the solution is additionally added 2 ml of aqueous 30% hydrogen peroxide solution, stirred for 2 hours and the mixture is poured into ice-cold water. The mixture is extracted with chloroform three times, the extract is washed with water and saline solution and dried over magnesium sulfate. The chloroform is distilled off to give 7 g of 2-(4-chlorophenyl)-4,4a,5,6-tetrahydrothieno[2',3':2,3]thiepino[4,5-c]pyridazin-3(2H)-one 7-oxide as pale brawn oil.

Workup

  1. temperaturecooling
  2. stirringstirred for 2 hours
  3. stirringstirred for 2 hours
  4. additionthe mixture is poured into ice-cold water
  5. extractionThe mixture is extracted with chloroform three times
  6. washthe extract is washed with water and saline solution
  7. dry with materialdried over magnesium sulfate
  8. distillationThe chloroform is distilled off

Sources & evidence

ORD record
ord-013b8f0409234deba244e2339a02aab8
Source dataset
uspto-grants-1992_12
Patent number
US05175162

Reaction notes

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