Sodium Acetate → HCID 12488425, compound

HRID 1730701Notes

Reaction equation

HRID 1730701 reaction equation
[O:1]([CH2:8][C:9]([NH:11][CH:12]1[C:25](=[O:26])[N:14]2[CH:15]([C:21]([O:23][CH3:24])=[O:22])[C:16]([CH3:20])(Br)[CH2:17][S:18][C@H:13]12)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C([O-])(=O)C.[Na+]>C(#N)C>[O:1]([CH2:8][C:9]([NH:11][CH:12]1[C:25](=[O:26])[N:14]2[C:15]([C:21]([O:23][CH3:24])=[O:22])=[C:16]([CH3:20])[CH2:17][S:18][C@H:13]12)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

4

Reactant 2

HCID 517045Sodium AcetateHCID 70360863HCID 70360863, compound

Product 1

HCID 12488425HCID 12488425, compoundYield 23.3%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A mixture of methyl 7-(2-phenoxyacetamido)-3-methyl-3-bromocepham-4-carboxylate (210 mg.) in acetonitrile (5 cc) and anhydrous sodium acetate (100 mg.) was heated under reflux for 6.5 hours. The reaction mixture was concentrated under reduced pressure and the residue was dissolved in ethyl acetate. The solution washed with water, dried and then concentrated. The residue was crystallized from a mixture of ether and methanol to yield crystals (40 mg.) of methyl 7-(2-phenoxyacetamido)-3-methyl-3-cephem-4-carboxylate, m.p. 124° - 125° C.

Workup

  1. temperaturewas heated
  2. temperatureunder reflux for 6.5 hours
  3. concentrationThe reaction mixture was concentrated under reduced pressure
  4. dissolutionthe residue was dissolved in ethyl acetate
  5. washThe solution washed with water
  6. customdried
  7. concentrationconcentrated
  8. customThe residue was crystallized from a mixture of ether and methanol

Sources & evidence

ORD record
ord-b69c6b3515b74f5eb8e60d5d28f403ff
Source dataset
uspto-grants-1976_11
Patent number
US03993646

Reaction notes

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