Hydrochloric Acid → 6-butyl-3-(2,3-dihydro-1-benzofuran-5-yl)-2-(2-hydroxyethyl)-5-{[2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}pyrimidin-4(3H)-one

HRID 1673802Notes

Reaction equation

HRID 1673802 reaction equation
[CH2:1]([C:5]1[N:10]=[C:9]([CH2:11][CH2:12][O:13]C)[N:8]([C:15]2[CH:16]=[CH:17][C:18]3[O:22][CH2:21][CH2:20][C:19]=3[CH:23]=2)[C:7](=[O:24])[C:6]=1[CH2:25][C:26]1[CH:31]=[CH:30][C:29]([C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][C:33]=2[C:38]2[NH:42][C:41](=[O:43])[O:40][N:39]=2)=[CH:28][CH:27]=1)[CH2:2][CH2:3][CH3:4].CC(=O)CC.Cl>O>[CH2:1]([C:5]1[N:10]=[C:9]([CH2:11][CH2:12][OH:13])[N:8]([C:15]2[CH:16]=[CH:17][C:18]3[O:22][CH2:21][CH2:20][C:19]=3[CH:23]=2)[C:7](=[O:24])[C:6]=1[CH2:25][C:26]1[CH:31]=[CH:30][C:29]([C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][C:33]=2[C:38]2[NH:42][C:41](=[O:43])[O:40][N:39]=2)=[CH:28][CH:27]=1)[CH2:2][CH2:3][CH3:4]

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 6569Methyl Ethyl KetoneHCID 1360269156-butyl-3-(2,3-dihydro-1-benzofuran-5-yl)-2-(2-methoxyethyl)-5-{[2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}pyrimidin-4(3H)-one

Product 1

HCID 1361467106-butyl-3-(2,3-dihydro-1-benzofuran-5-yl)-2-(2-hydroxyethyl)-5-{[2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}pyrimidin-4(3H)-oneYield 59%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of 6-butyl-3-(2,3-dihydro-1-benzofuran-5-yl)-2-(2-methoxyethyl)-5-{[2′-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}pyrimidin-4(3H)-one (1.0 g), 2-butanone (10 mL), water (6 mL) and concentrated hydrochloric acid (2 mL) was stirred at 100° C. for 1 hr. The reaction solution was cooled to room temperature, and the solvent was removed under reduced pressure. Water was added to the residue, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure and the residue was purified by silica gel column chromatography to give the title compound (0.57 g, 59%) as a solid.

Workup

  1. temperatureThe reaction solution was cooled to room temperature
  2. customthe solvent was removed under reduced pressure
  3. additionWater was added to the residue
  4. extractionthe mixture was extracted with ethyl acetate
  5. washThe organic layer was washed with saturated brine
  6. dry with materialdried over anhydrous magnesium sulfate
  7. customThe solvent was evaporated under reduced pressure
  8. customthe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-fd81f7816e09457b99d205014ef5d175
Source dataset
uspto-grants-2011_08
Patent number
US07998968B2

Reaction notes

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