Hydrochloric Acid → HCID 53732200, compound

HRID 223176Notes

Reaction equation

HRID 223176 reaction equation
[Cl:1][C:2]1[C:7]2[C:8](=[O:23])[N:9]3[CH2:22][CH2:21][C@H:10]3[C:11]3[N:12]([CH:13]=[N:14][C:15]=3[C:16]([O:18]CC)=[O:17])[C:6]=2[CH:5]=[CH:4][CH:3]=1.[OH-].[Na+].O.Cl>C(O)C>[Cl:1][C:2]1[C:7]2[C:8](=[O:23])[N:9]3[CH2:22][CH2:21][C@H:10]3[C:11]3[N:12]([CH:13]=[N:14][C:15]=3[C:16]([OH:18])=[O:17])[C:6]=2[CH:5]=[CH:4][CH:3]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 962WaterHCID 14798Sodium HydroxideHCID 54398902HCID 54398902, compound

Product 1

HCID 53732200HCID 53732200, compound

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A mixture of 1.79 g (5.4 mmol) of ethyl (S)-8-chloro-12,12a-dihydro-9-oxo-9H,11H-azeto[2,1-c]imidazo[1,5-a][1,4]benzodiazepine-1-carboxylate and 0.324 g (8.1 mmol) of sodium hydroxide is treated with 8.5 ml of water and 27 ml of ethanol and heated to boiling under reflux for 30 minutes. Subsequently, the mixture is neutralized with 8.1 ml of 1 N hydrochloric acid, the ethanol is distilled off, the residue is diluted with about 70 ml of water and left to stand in an ice-bath for 1 hour. The precipitated material is filtered off under suction, washed with water and dried. There is obtained (S)-8-chloro-12,12a-dihydro-9-oxo-9H,11H-azeto[2,1-c]imidazo[1,5-a][1,4]benzodiazepine-1-carboxylic acid of melting point 244°-245°.

Workup

  1. temperatureheated
  2. temperatureunder reflux for 30 minutes
  3. distillationthe ethanol is distilled off
  4. additionthe residue is diluted with about 70 ml of water
  5. waitleft
  6. filtrationThe precipitated material is filtered off under suction
  7. washwashed with water
  8. customdried

Sources & evidence

ORD record
ord-922ffef65a5b43948a126e061bcc72e3
Source dataset
uspto-grants-1982_10
Patent number
US04352816

Reaction notes

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