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Lactic Acid → HCID 135856772, compound

HRID 1244226
Notes
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Reaction equation

HRID 1244226 reaction equation
[CH2:1]([O:3][C:4]1[CH:9]=[CH:8][C:7]([S:10]([N:13]2[CH2:18][CH2:17][N:16]([CH3:19])[CH2:15][CH2:14]2)(=[O:12])=[O:11])=[CH:6][C:5]=1[C:20]1[NH:25][C:24](=[O:26])[C:23]2=[C:27]([CH3:33])[N:28]=[C:29]([CH2:30][CH2:31][CH3:32])[N:22]2[N:21]=1)[CH3:2].[C:34]([OH:39])(=[O:38])[CH:35]([CH3:37])[OH:36]>CCOCC.O>[C:34]([OH:39])(=[O:38])[CH:35]([CH3:37])[OH:36].[CH2:1]([O:3][C:4]1[CH:9]=[CH:8][C:7]([S:10]([N:13]2[CH2:14][CH2:15][N:16]([CH3:19])[CH2:17][CH2:18]2)(=[O:12])=[O:11])=[CH:6][C:5]=1[C:20]1[NH:25][C:24](=[O:26])[C:23]2=[C:27]([CH3:33])[N:28]=[C:29]([CH2:30][CH2:31][CH3:32])[N:22]2[N:21]=1)[CH3:2]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 2

HCID 612Lactic AcidHCID 135544141N-Desmethylvardenafil

Product 1

HCID 135856772HCID 135856772, compound

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 3283Diethyl EtherSolvent

Procedure

100 mg (0.211 mmol) of 2-[2-ethoxy-5-(4-methyl-piperazine-1-sulphonyl)-phenyl]-5-methyl-7-propyl-3H-imidazo[5,1-f][1,2,4]triazin-4-one are suspended in 5 ml of ether and admixed with 20 mg of an 85% strength solution of lactic acid in water. The mixture is stirred at room temperature for 10 minutes and evaporated to dryness. The residue is titrated with ether and filtered off with suction. This gives 110 mg (92%) of 2-[2-ethoxy-5-(4-methyl-piperazine-1-sulphonyl)-phenyl]-5-methyl-7-propyl-3H-imidazo[5,1-f][1,2,4]triazin-4-one lactate.

Workup

  1. customevaporated to dryness
  2. filtrationfiltered off with suction

Sources & evidence

ORD record
ord-4662eb32462d4efaa6ea23b066353606
Source dataset
uspto-grants-2006_10
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07122540B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes