Dimethylformamide → methyl 5-[4-({4-[({4-[(E)-2-(diethoxyphosphoryl)ethenyl]-1-phenyl-1H-pyrazol-3-yl}oxy)methyl]-2-methoxyphenoxy}methyl)-5-methyl-1,3-oxazol-2-yl]-2-methylbenzoate

HRID 2221987Notes

Reaction equation

HRID 2221987 reaction equation
[CH:1]([C:3]1[C:4]([O:14][CH2:15][C:16]2[CH:40]=[CH:39][C:19]([O:20][CH2:21][C:22]3[N:23]=[C:24]([C:28]4[CH:29]=[CH:30][C:31]([CH3:38])=[C:32]([CH:37]=4)[C:33]([O:35][CH3:36])=[O:34])[O:25][C:26]=3[CH3:27])=[C:18]([O:41][CH3:42])[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.[CH2:43]([P:52](=[O:59])([O:56][CH2:57][CH3:58])[O:53][CH2:54][CH3:55])P(=O)(OCC)OCC.CN(C)C=O.[H-].[Na+]>O>[CH2:57]([O:56][P:52](/[CH:43]=[CH:1]/[C:3]1[C:4]([O:14][CH2:15][C:16]2[CH:40]=[CH:39][C:19]([O:20][CH2:21][C:22]3[N:23]=[C:24]([C:28]4[CH:29]=[CH:30][C:31]([CH3:38])=[C:32]([CH:37]=4)[C:33]([O:35][CH3:36])=[O:34])[O:25][C:26]=3[CH3:27])=[C:18]([O:41][CH3:42])[CH:17]=2)=[N:5][N:6]([C:8]2[CH:9]=[CH:10][CH:11]=[CH:12][CH:13]=2)[CH:7]=1)([O:53][CH2:54][CH3:55])=[O:59])[CH3:58]

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 15455Tetraethyl methylenediphosphonateHCID 24758Sodium hydrideHCID 86605902methyl 5-{4-[(4-{[(4-formyl-1-phenyl-1H-pyrazol-3-yl)oxy]methyl}-2-methoxyphenoxy)methyl]-5-methyl-1,3-oxazol-2-yl}-2-methylbenzoate

Product 1

HCID 86605903methyl 5-[4-({4-[({4-[(E)-2-(diethoxyphosphoryl)ethenyl]-1-phenyl-1H-pyrazol-3-yl}oxy)methyl]-2-methoxyphenoxy}methyl)-5-methyl-1,3-oxazol-2-yl]-2-methylbenzoateYield 41%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

To a mixture of methyl 5-{4-[(4-{[(4-formyl-1-phenyl-1H-pyrazol-3-yl)oxy]methyl}-2-methoxyphenoxy)methyl]-5-methyl-1,3-oxazol-2-yl}-2-methylbenzoate (1.13 g), tetraethyl methylenediphosphonate (0.63 g) and N,N-dimethylformamide (30 mL) was added sodium hydride (60% in oil, 0.10 g) at room temperature. The mixture was stirred at room temperature for 2 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 to give methyl 5-[4-({4-[({4-[(E)-2-(diethoxyphosphoryl)ethenyl]-1-phenyl-1H-pyrazol-3-yl}oxy)methyl]-2-methoxyphenoxy}methyl)-5-methyl-1,3-oxazol-2-yl]-2-methylbenzoate as colorless crystals (0.57 g, yield 41%) from a fraction eluted with ethyl acetate-hexane (4:1, v/v). Recrystallization from ethyl acetate-hexane gave colorless prism crystals. melting point: 121-122° 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

Sources & evidence

ORD record
ord-47403b55d3b0457a80f25a0ab5c22166
Source dataset
uspto-grants-2008_05
Patent number
US07368578B2

Reaction notes

Loading…