Hydrochloric Acid → (S)-1-(5-(3-(1-ethyl-1H-pyrazol-5-yloxy)-5-(pyridin-2-ylthio)pyridin-2-ylamino)-1,2,4-thiadiazol-3-yl)ethane-1,2-diol

HRID 1523596Notes

Reaction equation

HRID 1523596 reaction equation
[CH2:1]([N:3]1[C:7]([O:8][C:9]2[C:10]([NH:22][C:23]3[S:27][N:26]=[C:25]([C@H:28]4[CH2:32][O:31]C5(CCCCC5)[O:29]4)[N:24]=3)=[N:11][CH:12]=[C:13]([S:15][C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][N:17]=3)[CH:14]=2)=[CH:6][CH:5]=[N:4]1)[CH3:2].O.Cl>CCO>[CH2:1]([N:3]1[C:7]([O:8][C:9]2[C:10]([NH:22][C:23]3[S:27][N:26]=[C:25]([C@H:28]([OH:29])[CH2:32][OH:31])[N:24]=3)=[N:11][CH:12]=[C:13]([S:15][C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][N:17]=3)[CH:14]=2)=[CH:6][CH:5]=[N:4]1)[CH3:2]

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 962WaterHCID 68472914(S)-N-(3-(1-ethyl-1H-pyrazol-5-yloxy)-5-(pyridin-2-ylthio)pyridin-2-yl)-3-(1,4-dioxaspiro[4.5]decan-2-yl)-1,2,4-thiadiazol-5-amine

Product 1

HCID 25210589(S)-1-(5-(3-(1-ethyl-1H-pyrazol-5-yloxy)-5-(pyridin-2-ylthio)pyridin-2-ylamino)-1,2,4-thiadiazol-3-yl)ethane-1,2-diol

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

To a mixture of (S)—N-(3-(1-ethyl-1H-pyrazol-5-yloxy)-5-(pyridin-2-ylthio)pyridin-2-yl)-3-(1,4-dioxaspiro[4.5]decan-2-yl)-1,2,4-thiadiazol-5-amine (1.24 g, 2.31 mmol) in EtOH (25 ml) and H2O (1.09 ml, 2.31 mmol) was added concentrated HCl (0.480 ml, 5.77 mmol) and the reaction was heated at reflux for 8 hours. The reaction was allowed to cool to ambient temperature and stirred overnight. The mixture was concentrated to a residue that was dissolved in EtOAc and saturated aqueous NaHCO3. The combined organic layers were washed with water, dried over Na2SO4, filtered and concentrated. The residue was purified over silica gel (3% MeOH/CH2Cl2) to afford (S)-1-(5-(3-(1-ethyl-1H-pyrazol-5-yloxy)-5-(pyridin-2-ylthio)pyridin-2-ylamino)-1,2,4-thiadiazol-3-yl)ethane-1,2-diol as cream solids. The solids were dissolved in CH2Cl2 (25 ml) and 1N HCl in Et2O (20 ml) was added. The mixture was concentrated to dryness and dried in the vacuum oven to afford (S)-1-(5-(3-(1-ethyl-1H-pyrazol-5-yloxy)-5-(pyridin-2-ylthio)pyridin-2-ylamino)-1,2,4-thiadiazol-3-yl)ethane-1,2-diol hydrochloride (0.569 g, 49.9% yield) as an off-white solid. Mass spectrum (apci) m/z=458.1 (M+H−HCl).

Workup

  1. temperaturethe reaction was heated
  2. temperatureat reflux for 8 hours
  3. concentrationThe mixture was concentrated to a residue that
  4. dissolutionwas dissolved in EtOAc
  5. washThe combined organic layers were washed with water
  6. dry with materialdried over Na2SO4
  7. filtrationfiltered
  8. concentrationconcentrated
  9. customThe residue was purified over silica gel (3% MeOH/CH2Cl2)

Sources & evidence

ORD record
ord-35f9c3e8b19c441f9a5cd3164aa4dee9
Source dataset
uspto-grants-2015_07
Patent number
US09079890B2

Reaction notes

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