Hydrochloric Acid → FK1052 hydrochloride

HRID 847496Notes

Reaction equation

HRID 847496 reaction equation
[CH3:1][C:2]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[N:4]2[C:11](=[O:22])[CH:12]([CH2:15][C:16]3[N:17]=[CH:18][NH:19][C:20]=3[CH3:21])[CH2:13][CH2:14][C:3]=12.[ClH:23]>CO.C(O)C>[ClH:23].[CH3:1][C:2]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[N:4]2[C:11](=[O:22])[CH:12]([CH2:15][C:16]3[N:17]=[CH:18][NH:19][C:20]=3[CH3:21])[CH2:13][CH2:14][C:3]=12

Participants

5

Reactant 2

HCID 313Hydrochloric AcidHCID 125368FK 1052

Product 1

HCID 9949384FK1052 hydrochloride

Reagents, catalysts & solvents 2

HCID 702EthanolSolvent2×HCID 887MethanolSolvent

Procedure

The suspension of 8,9-dihydro-10-methyl-7-[(5-methyl-1H-imidazol-4-yl)methyl]pyrido[1,2-a]indol-6(7H)one (2.0 g) in methanol (60 ml) was treated with hydrogen chloride in ethanol and then diluted with hot aqueous ethanol (water:ethanol, 1:4) to give a clear solution. After filtration of the insoluble materials, the filtrate was evaporated under reduced pressure to about 40 ml and allowed to stand at room temperature overnight. Filtration, followed by washing with ethanol, gave 8,9-dihydro-10-methyl-7-[(5-methyl-1H-imidazol-4-yl)-methyl]pyrido[1,2-a]indol-6(7H)-one hydrochloride (2.10 g) as crystals.

Workup

  1. customto give a clear solution
  2. filtrationAfter filtration of the insoluble materials
  3. customthe filtrate was evaporated under reduced pressure to about 40 ml
  4. filtrationFiltration
  5. washby washing with ethanol

Sources & evidence

ORD record
ord-df2c7ea46e8c4d0bb15763c7c8c81dfc
Source dataset
uspto-grants-1992_08
Patent number
US05141945

Reaction notes

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