Hydrochloric Acid → HCID 19607957, compound

HRID 1291616Notes

Reaction equation

HRID 1291616 reaction equation
C([O:3][C:4]([CH:6]1[CH2:15][C:14]2[C:9](=[CH:10][CH:11]=[CH:12][CH:13]=2)[N:8]([C:16](=[O:34])[C:17]2[CH:22]=[CH:21][C:20]([NH:23][C:24](=[O:33])[C:25]3[CH:30]=[C:29]([Cl:31])[CH:28]=[C:27]([Cl:32])[CH:26]=3)=[CH:19][CH:18]=2)[CH2:7]1)=[O:5])C.[OH-].[Na+].Cl>O.C(O)C>[C:4]([CH:6]1[CH2:15][C:14]2[C:9](=[CH:10][CH:11]=[CH:12][CH:13]=2)[N:8]([C:16](=[O:34])[C:17]2[CH:18]=[CH:19][C:20]([NH:23][C:24](=[O:33])[C:25]3[CH:30]=[C:29]([Cl:31])[CH:28]=[C:27]([Cl:32])[CH:26]=3)=[CH:21][CH:22]=2)[CH2:7]1)([OH:5])=[O:3]

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 19608055HCID 19608055, compound

Product 1

HCID 19607957HCID 19607957, compoundYield 70.7%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 962WaterSolvent

Procedure

To 3-ethoxycarbonyl-1-[4-(3,5-dichlorobenzoylamino)benzoyl]-1,2,3,4-tetrahydroquinoline (0.6 g) are added an aqueous solution of sodium hydroxide (0.1 g) in water (1 ml) and ethanol (5 ml). The mixture is stirred at room temperature for 15 minutes, and acidified with diluted hydrochloric acid, extracted with dichloromethane. The solvent is distilled off and the resulting residue is purified by silica gel column chromatography (eluent; dichloromethane→dichloromethane:methanol=50:1), and recrystallized from ethanol to give 3-carboxy-1-[4-(3,5-dichlorobenzoylamino)benzoyl]-1,2,3,4-tetrahydroquinoline (0.4 g) as white powder, m.p. 221°-223° C.

Workup

  1. extractionextracted with dichloromethane
  2. distillationThe solvent is distilled off
  3. customthe resulting residue is purified by silica gel column chromatography (eluent; dichloromethane→dichloromethane:methanol=50:1)
  4. customrecrystallized from ethanol

Sources & evidence

ORD record
ord-434819e61e654c8cabc4b0ddb5191657
Source dataset
uspto-grants-1998_05
Patent number
US05753677

Reaction notes

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