Hydrochloric Acid → 2-{3-[(4-{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxybenzyl)oxy]-1-phenyl-1H-pyrazol-4-yl}ethanol

HRID 2221814Notes

Reaction equation

HRID 2221814 reaction equation
[O:1]1[CH:5]=[CH:4][CH:3]=[C:2]1[C:6]1[O:7][C:8]([CH3:38])=[C:9]([CH2:11][O:12][C:13]2[CH:35]=[CH:34][C:16]([CH2:17][O:18][C:19]3[C:23]([CH2:24][C:25](O)=[O:26])=[CH:22][N:21]([C:28]4[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=4)[N:20]=3)=[CH:15][C:14]=2[O:36][CH3:37])[N:10]=1.O1CCCC1.B.O1CCCC1.Cl>O>[O:1]1[CH:5]=[CH:4][CH:3]=[C:2]1[C:6]1[O:7][C:8]([CH3:38])=[C:9]([CH2:11][O:12][C:13]2[CH:35]=[CH:34][C:16]([CH2:17][O:18][C:19]3[C:23]([CH2:24][CH2:25][OH:26])=[CH:22][N:21]([C:28]4[CH:29]=[CH:30][CH:31]=[CH:32][CH:33]=4)[N:20]=3)=[CH:15][C:14]=2[O:36][CH3:37])[N:10]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 8028TetrahydrofuranHCID 2723981Borane;tetrahydrofuranHCID 69216430[3-[4-[2-(2-furyl)-5-methyl-4-oxazolylmethoxy]-3-methoxybenzyloxy]-1-phenyl-1H-pyrazol-4-yl]acetic acid

Product 1

HCID 692160832-{3-[(4-{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxybenzyl)oxy]-1-phenyl-1H-pyrazol-4-yl}ethanolYield 62%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

To a mixture of {3-[(4-{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxybenzyl)oxy]-1-phenyl-1H-pyrazol-4-yl}acetic acid (0.52 g) and tetrahydrofuran (10 mL) was added borane-tetrahydrofuran (1.02 M tetrahydrofuran solution, 2.0 mL) at 0° C., and the mixture was stirred at room temperature for 1 hr. 1N Hydrochloric acid (5 mL) and water were added to the reaction mixture and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed successively with saturated aqueous sodium hydrogen carbonate and saturated brine, dried over anhydrous magnesium sulfate and concentrated. The residue was subjected to silica gel column chromatography to give 2-{3-[(4-{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxybenzyl)oxy]-1-phenyl-1H-pyrazol-4-yl}ethanol as colorless crystals (0.31 g, yield 62%) from a fraction eluted with ethyl acetate-hexane (2:1, v/v). Recrystallization from ethyl acetate-hexane gave colorless prism crystals. melting point: 123-124° C.

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe ethyl acetate layer was washed successively with saturated aqueous sodium hydrogen carbonate and saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-010ca610b48a4f3b9be437e02edbd999
Source dataset
uspto-grants-2008_05
Patent number
US07368578B2

Reaction notes

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