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1,4-Dioxane hydrochloride → 5-(2,4-Dihydroxy-5-isopropylphenyl)-4-[4-(4-methylpiperazin-1-ylmethyl)phenyl]-2,4-dihydro-[1,2,4]triazol-3-one

HRID 1947212
Notes
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Reaction equation

HRID 1947212 reaction equation
Cl.O1CCOCC1.[CH:8]([C:11]1[C:12]([O:41]COC)=[CH:13][C:14]([O:37]COC)=[C:15]([C:17]2[N:18]([C:23]3[CH:28]=[CH:27][C:26]([CH2:29][N:30]4[CH2:35][CH2:34][N:33]([CH3:36])[CH2:32][CH2:31]4)=[CH:25][CH:24]=3)[C:19](=[O:22])[NH:20][N:21]=2)[CH:16]=1)([CH3:10])[CH3:9]>CO>[OH:37][C:14]1[CH:13]=[C:12]([OH:41])[C:11]([CH:8]([CH3:10])[CH3:9])=[CH:16][C:15]=1[C:17]1[N:18]([C:23]2[CH:24]=[CH:25][C:26]([CH2:29][N:30]3[CH2:31][CH2:32][N:33]([CH3:36])[CH2:34][CH2:35]3)=[CH:27][CH:28]=2)[C:19](=[O:22])[NH:20][N:21]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

4

Reactant 2

HCID 204431481,4-Dioxane hydrochlorideHCID 598298715-(5-Isopropyl-2,4-bis-methoxymethoxyphenyl)-4-[4-(4-methylpiperazin-1-ylmethyl)phenyl]-2,4-dihydro-[1,2,4]triazol-3-one

Product 1

HCID 1359070425-(2,4-Dihydroxy-5-isopropylphenyl)-4-[4-(4-methylpiperazin-1-ylmethyl)phenyl]-2,4-dihydro-[1,2,4]triazol-3-one

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
40 °C

Procedure

At room temperature, 4 N hydrochloric acid/1,4-dioxane solution (5 mL) was added to a methanol (5 mL) solution of 5-(5-isopropyl-2,4-bis-methoxymethoxyphenyl)-4-[4-(4-methyl piperazin-1-ylmethyl)phenyl]-2,4-dihydro-[1,2,4]triazol-3-one (F652-09, 644 mg, 1.26 mmol). After stirring at 40° C. for 1 hour, the solvent was distilled off under reduced pressure. Methanol was added to the crude product thus obtained, and the resulting suspension was stirred at room temperature. The precipitated solid was collected by filtration to obtain 5-(2,4-dihydroxy-5-isopropylphenyl)-4-[4-(4-methylpiperazin-1-ylmethyl)phenyl]-2,4-dihydro-[1,2,4]triazol-3-one (OH-a13) dihydrochloride (white solids).

Workup

  1. distillationthe solvent was distilled off under reduced pressure
  2. additionMethanol was added to the crude product
  3. customthus obtained
  4. stirringthe resulting suspension was stirred at room temperature
  5. filtrationThe precipitated solid was collected by filtration

Sources & evidence

ORD record
ord-f8309d77c0494fc7b46e66720e4179dc
Source dataset
uspto-grants-2013_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08399464B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes