Dimethylformamide → ethyl 5-[4-({4-[({4-[(Z)-2-(2-ethyl-1,3-thiazol-4-yl)ethenyl]-1-phenyl-1H-pyrazol-3-yl}oxy)methyl]-2-methoxyphenoxy}methyl)-5-methyl-1,3-oxazol-2-yl]thiophene-2-carboxylate

HRID 2221997Notes

Reaction equation

HRID 2221997 reaction equation
[CH:1]([C:3]1[C:4]([O:14][CH2:15][C:16]2[CH:39]=[CH:38][C:19]([O:20][CH2:21][C:22]3[N:23]=[C:24]([C:28]4[S:32][C:31]([C:33]([O:35][CH2:36][CH3:37])=[O:34])=[CH:30][CH:29]=4)[O:25][C:26]=3[CH3:27])=[C:18]([O:40][CH3:41])[CH:17]=2)=[N:5][N:6]([C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)[CH:7]=1)=O.[Cl-].[CH2:43]([C:45]1[S:46][CH:47]=[C:48]([CH2:50][P+](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[N:49]=1)[CH3:44].C(=O)([O-])[O-].[K+].[K+].CN(C)C=O>O>[CH2:43]([C:45]1[S:46][CH:47]=[C:48](/[CH:50]=[CH:1]\[C:3]2[C:4]([O:14][CH2:15][C:16]3[CH:39]=[CH:38][C:19]([O:20][CH2:21][C:22]4[N:23]=[C:24]([C:28]5[S:32][C:31]([C:33]([O:35][CH2:36][CH3:37])=[O:34])=[CH:30][CH:29]=5)[O:25][C:26]=4[CH3:27])=[C:18]([O:40][CH3:41])[CH:17]=3)=[N:5][N:6]([C:8]3[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=3)[CH:7]=2)[N:49]=1)[CH3:44]

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 23076588[(2-Ethyl-1,3-thiazol-4-yl)methyl]triphenylphosphonium chlorideHCID 86605910ethyl 5-{4-[(4-[{(4-formyl-1-phenyl-1H-pyrazol-3-yl)oxy}methyl]-2-methoxyphenoxy)methyl]-5-methyl-1,3-oxazol-2-yl}thiophene-2-carboxylate

Product 1

HCID 69216152ethyl 5-[4-({4-[({4-[(Z)-2-(2-ethyl-1,3-thiazol-4-yl)ethenyl]-1-phenyl-1H-pyrazol-3-yl}oxy)methyl]-2-methoxyphenoxy}methyl)-5-methyl-1,3-oxazol-2-yl]thiophene-2-carboxylateYield 28%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A mixture of ethyl 5-{4-[(4-[{(4-formyl-1-phenyl-1H-pyrazol-3-yl)oxy}methyl]-2-methoxyphenoxy)methyl]-5-methyl-1,3-oxazol-2-yl}thiophene-2-carboxylate (1.80 g), [(2-ethyl-1,3-thiazol-4-yl)methyl]triphenylphosphonium chloride (1.99 g), anhydrous potassium carbonate (0.65 g) and N,N-dimethylformamide (50 mL) was stirred at room temperature for 15 hrs. Water was poured into the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated. The residue was subjected to silica gel column chromatography and eluted with ethyl acetate-hexane (2:3, v/v) to give ethyl 5-[4-({4-[({4-[(Z)-2-(2-ethyl-1,3-thiazol-4-yl)ethenyl]-1-phenyl-1H-pyrazol-3-yl}oxy)methyl]-2-methoxyphenoxy}methyl)-5-methyl-1,3-oxazol-2-yl]thiophene-2-carboxylate as colorless crystals (0.60 g, yield 28%). Recrystallization from ethyl acetate-hexane gave colorless prism crystals. melting point: 118-119° C.

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated
  5. washeluted with ethyl acetate-hexane (2:3

Sources & evidence

ORD record
ord-338f2a7268d74132841ee4fb628eae14
Source dataset
uspto-grants-2008_05
Patent number
US07368578B2

Reaction notes

Loading…