{1-ethyl-3-[(4-{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxybenzyl)oxy]-1H-pyrazol-4-yl}methanol → 1-ethyl-3-[(4-{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxybenzyl)oxy]-1H-pyrazole-4-carbaldehyde

HRID 2221875Notes

Reaction equation

HRID 2221875 reaction equation
[CH2:1]([N:3]1[CH:7]=[C:6]([CH2:8][OH:9])[C:5]([O:10][CH2:11][C:12]2[CH:17]=[CH:16][C:15]([O:18][CH2:19][C:20]3[N:21]=[C:22]([C:26]4[O:27][CH:28]=[CH:29][CH:30]=4)[O:23][C:24]=3[CH3:25])=[C:14]([O:31][CH3:32])[CH:13]=2)=[N:4]1)[CH3:2]>[O-2].[O-2].[Mn+4].O1CCCC1>[CH2:1]([N:3]1[CH:7]=[C:6]([CH:8]=[O:9])[C:5]([O:10][CH2:11][C:12]2[CH:17]=[CH:16][C:15]([O:18][CH2:19][C:20]3[N:21]=[C:22]([C:26]4[O:27][CH:28]=[CH:29][CH:30]=4)[O:23][C:24]=3[CH3:25])=[C:14]([O:31][CH3:32])[CH:13]=2)=[N:4]1)[CH3:2]

Participants

4

Reactant 1

HCID 69217187{1-ethyl-3-[(4-{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxybenzyl)oxy]-1H-pyrazol-4-yl}methanol

Product 1

HCID 866058211-ethyl-3-[(4-{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxybenzyl)oxy]-1H-pyrazole-4-carbaldehydeYield 89.5%

Reagents, catalysts & solvents 2

HCID 178418406HCID 178418406, compoundCatalystHCID 8028TetrahydrofuranSolvent

Procedure

A mixture of {1-ethyl-3-[(4-{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxybenzyl)oxy]-1H-pyrazol-4-yl}methanol (2.19 g), activated manganese dioxide (6.0 g) and tetrahydrofuran (100 mL) was stirred at room temperature for 15 hrs. Manganese dioxide was removed by filtration and the filtrate was concentrated. The obtained crystals were collected by filtration to give 1-ethyl-3-[(4-{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxybenzyl)oxy]-1H-pyrazole-4-carbaldehyde (1.95 g, yield 89%). Recrystallization from ethyl acetate-hexane gave colorless prism crystals. melting point: 103-104° C.

Workup

  1. customManganese dioxide was removed by filtration
  2. concentrationthe filtrate was concentrated
  3. filtrationThe obtained crystals were collected by filtration

Sources & evidence

ORD record
ord-c3a0f3ee01274783985f82383d6affe0
Source dataset
uspto-grants-2008_05
Patent number
US07368578B2

Reaction notes

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