Hydrochloric Acid → Methyl 4-(2-oxopropyl)benzoate

HRID 580628

Reaction equation

HRID 580628 reaction equation
S(S([O-])(=O)=O)([O-])(=O)=[O:2].[Na+].[Na+].[C:11]([C:15]1[CH:20]=[CH:19][C:18]([CH2:21][C:22](=NO)[CH3:23])=[CH:17][CH:16]=1)([O:13][CH3:14])=[O:12].Cl>O.CO>[C:11]([C:15]1[CH:20]=[CH:19][C:18]([CH2:21][C:22](=[O:2])[CH3:23])=[CH:17][CH:16]=1)([O:13][CH3:14])=[O:12]

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 146045Sodium dithionateHCID 867397271-(4-Carbomethoxyphenyl)propan-2-one oxime

Product 1

HCID 11137970Methyl 4-(2-oxopropyl)benzoate

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 962WaterSolvent

Procedure

Sodium metabisulphate (131 g) in water (300 ml) was added to 1-(4-carbomethoxyphenyl)propan-2-one oxime (37.5 g) in methanol (200 ml) and the mixture refluxed for 6 hours. The reaction mixture was cooled, concentrated hydrochloric acid (100 ml) added, the mixture extracted with chloroform and the combined chloroform extracts washed with water followed by sodium bicarbonate solution. The chloroform layer was dried (MgSO4) and evaporated to give the title compound as an oil (bp 126°-129°/0.7 mm) which crystallised on standing, (mp 40°-47°). τ (CDCl3) 7.88 (3H, s), 6.28 (2H, s), 6.14 (3H, s), 2.77 (2H, d, J=8 Hz), 2,04 (2H, d, J=8 Hz).

Workup

  1. temperaturethe mixture refluxed for 6 hours
  2. temperatureThe reaction mixture was cooled
  3. extractionthe mixture extracted with chloroform
  4. washthe combined chloroform extracts washed with water
  5. dry with materialThe chloroform layer was dried (MgSO4)
  6. customevaporated

Sources & evidence

ORD record
ord-ace6e6a004ae49a58fec74cbc5e3bcce
Source dataset
uspto-grants-1988_06
Patent number
US04753962

Linked notes

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