Trifluoroacetic acid → 9-pentyl-3-(trifluoromethyl)-6,9-dihydro-5H-[1,2,4]triazolo[4,3-a]purin-5-one

HRID 1664549Notes

Reaction equation

HRID 1664549 reaction equation
[CH2:1]([N:6]1[C:14]2[N:13]=[CH:12][NH:11][C:10]=2[C:9](=[O:15])[NH:8]/[C:7]/1=[N:16]\[NH2:17])[CH2:2][CH2:3][CH2:4][CH3:5].[F:18][C:19]([F:24])([F:23])[C:20](O)=O>>[CH2:1]([N:6]1[C:14]2[N:13]=[CH:12][NH:11][C:10]=2[C:9](=[O:15])[N:8]2[C:20]([C:19]([F:24])([F:23])[F:18])=[N:17][N:16]=[C:7]12)[CH2:2][CH2:3][CH2:4][CH3:5]

Participants

3

Reactant 2

HCID 6422Trifluoroacetic acidHCID 178446164HCID 178446164, compound

Product 1

HCID 576003029-pentyl-3-(trifluoromethyl)-6,9-dihydro-5H-[1,2,4]triazolo[4,3-a]purin-5-oneYield 60.2%

Procedure

The mixture of (2E)-3-pentyl-3,7-dihydro-1H-purine-2,6-dione 2-hydrazone (200 mg, 0.85 mmol) in trifluoroacetic acid (10 mL) was refluxed overnight. The reaction mixture was concentrated and purified by preparative LCMS to yield the desired product (160 mg, 60.2%). LCMS calculated for C12H14F3N6O (M+H): 315.1. found 315.0.

Workup

  1. temperaturewas refluxed overnight
  2. concentrationThe reaction mixture was concentrated
  3. custompurified by preparative LCMS

Sources & evidence

ORD record
ord-acc5a34b2e0548a1b00fa8d657fd011e
Source dataset
uspto-grants-2011_10
Patent number
US08039478B2

Reaction notes

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