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Dimethylformamide → diethyl (E)-2-{3-[(3-methoxy-4-{[2-(morpholin-4-yl)-1,3-thiazol-4-yl]methoxy}benzyl)oxy]-1-phenyl-1H-pyrazol-4-yl}ethenylphosphonate

HRID 2221882
Notes
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Reaction equation

HRID 2221882 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:21]=[CH:22][C:23]=1[O:24][CH2:25][C:26]1[N:27]=[C:28]([N:31]2[CH2:36][CH2:35][O:34][CH2:33][CH2:32]2)[S:29][CH:30]=1)[CH2:6][O:7][C:8]1[C:12]([CH:13]=O)=[CH:11][N:10]([C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)[N:9]=1.[CH2:37]([P:46](=[O:53])([O:50][CH2:51][CH3:52])[O:47][CH2:48][CH3:49])P(=O)(OCC)OCC.CN(C)C=O.[H-].[Na+]>O>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:21]=[CH:22][C:23]=1[O:24][CH2:25][C:26]1[N:27]=[C:28]([N:31]2[CH2:32][CH2:33][O:34][CH2:35][CH2:36]2)[S:29][CH:30]=1)[CH2:6][O:7][C:8]1[C:12](/[CH:13]=[CH:37]/[P:46](=[O:53])([O:47][CH2:48][CH3:49])[O:50][CH2:51][CH3:52])=[CH:11][N:10]([C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)[N:9]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 15455Tetraethyl methylenediphosphonateHCID 24758Sodium hydrideHCID 230765713-({3-methoxy-4-[(2-morpholin-4-yl-1,3-thiazol-4-yl)methoxy]benzyl}oxy)-1-phenyl-1H-pyrazole-4-carbaldehyde

Product 1

HCID 86605829diethyl (E)-2-{3-[(3-methoxy-4-{[2-(morpholin-4-yl)-1,3-thiazol-4-yl]methoxy}benzyl)oxy]-1-phenyl-1H-pyrazol-4-yl}ethenylphosphonate
Yield 71.2%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

To a mixture of 3-[(3-methoxy-4-{[2-(morpholin-4-yl)-1,3-thiazol-4-yl]methoxy}benzyl)oxy]-1-phenyl-1H-pyrazole-4-carbaldehyde (0.40 g), tetraethyl methylenediphosphonate (0.25 g) and N,N-dimethylformamide (10 mL) was added sodium hydride (60% in oil, 0.040 g) at room temperature, and the mixture was stirred at the same 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 to give diethyl (E)-2-{3-[(3-methoxy-4-{[2-(morpholin-4-yl)-1,3-thiazol-4-yl]methoxy}benzyl)oxy]-1-phenyl-1H-pyrazol-4-yl}ethenylphosphonate as colorless crystals (0.36 g, yield 71%) from a fraction eluted with ethyl acetate-hexane (4:1, v/v). Recrystallization from ethyl acetate-hexane gave colorless prism crystals. melting point: 93-94° 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-ce95aed47d61466e9acb2bb957f8657e
Source dataset
uspto-grants-2008_05
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07368578B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes