Sodium Dithionite → HCID 12389021, compound

HRID 1833363Notes

Reaction equation

HRID 1833363 reaction equation
S(S([O-])=O)([O-])=O.[Na+].[Na+].[N+:9]([C:12]1[C:17](=[O:18])[C:16]2[CH:19]=[CH:20][C:21]([O:23][CH3:24])=[CH:22][C:15]=2[O:14][CH:13]=1)([O-])=O>O.C(O)C>[NH2:9][C:12]1[C:17](=[O:18])[C:16]2[CH:19]=[CH:20][C:21]([O:23][CH3:24])=[CH:22][C:15]=2[O:14][CH:13]=1

Participants

5

Reactant 2

HCID 24489Sodium DithioniteHCID 127369137-Methoxy-3-nitro-4H-1-benzopyran-4-one

Product 1

HCID 12389021HCID 12389021, compound

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 962WaterSolvent

Procedure

Sodium dithionite (140 g, 0.804 mole) was added to a suspension of 3-nitro-7-methoxy-4H-1-benzopyran-4-one (50 g, 0.261 mole) in water (330 ml) and absolute ethanol (110 ml). The reaction mixture was stirred for 15 min., concentrated at reduced pressure and filtered. The solids were washed with water and recrystallized from ethyl acetate to give light brown crystals, 159°-162°.

Workup

  1. concentrationconcentrated at reduced pressure
  2. filtrationfiltered
  3. washThe solids were washed with water
  4. customrecrystallized from ethyl acetate
  5. customto give light brown crystals, 159°-162°

Sources & evidence

ORD record
ord-f940e4eca86c452d9dccca0eb21c4d12
Source dataset
uspto-grants-1978_01
Patent number
US04066655

Reaction notes

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