Hydrochloric Acid → HCID 131713186, compound

HRID 905455Notes

Reaction equation

HRID 905455 reaction equation
C([NH:3][C:4]1[S:5][C:6]([C:9](=[N:27][O:28][CH3:29])[C:10]([NH:12][CH:13]2[C:25](=[O:26])[N:15]3[C:16]([C:22]([OH:24])=[O:23])=[C:17]([CH:20]=[CH2:21])[CH2:18][S:19][C@H:14]23)=[O:11])=[CH:7][N:8]=1)=O.Cl>CO>[NH2:3][C:4]1[S:5][C:6]([C:9](=[N:27][O:28][CH3:29])[C:10]([NH:12][CH:13]2[C:25](=[O:26])[N:15]3[C:16]([C:22]([OH:24])=[O:23])=[C:17]([CH:20]=[CH2:21])[CH2:18][S:19][C@H:14]23)=[O:11])=[CH:7][N:8]=1

Participants

4

Reactant 2

HCID 313Hydrochloric AcidHCID 137175473HCID 137175473, compound

Product 1

HCID 131713186HCID 131713186, compoundYield 73.1%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

A solution of 7-[2-(2-formamidothiazol-5-yl)-2-methoxyiminoacetamido]-3-vinyl-3-cephem-4-carboxylic acid (syn isomer) (1.9 g) and conc. hydrochloric acid (1.36 g) in methanol (190 ml) was stirred at ambient temperature for 1.3 hours. After the reaction mixture was evaporated to dryness, the residue was suspended in water (35 ml) and then adjusted to pH 7-8 with 10% aqueous sodium hydroxide, followed by adjusting to pH 3 with 10% hydrochloric acid. The precipitated solid was collected by filtration, washed with water and then dried to give 7-[2-(2-aminothiazol-5-yl)-2-methoxyiminoacetamido]-3-vinyl-3-cephem-4-carboxylic acid (syn isomer) (1.3 g), mp>250° C.

Workup

  1. customAfter the reaction mixture was evaporated to dryness
  2. filtrationThe precipitated solid was collected by filtration
  3. washwashed with water
  4. customdried

Sources & evidence

ORD record
ord-5631ec05505a43d68921545508ec9d4e
Source dataset
uspto-grants-1983_12
Patent number
US04423213

Reaction notes

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