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Sodium Sulfite → (2E)-3-(5-(4-fluorophenyl)-1-methyl-1H-pyrazol-4-yl)-N-(4-((methylsulfinyl)methyl)phenyl)acrylamide

HRID 30726
Notes
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Reaction equation

HRID 30726 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:12]([CH3:13])[N:11]=[CH:10][C:9]=2/[CH:14]=[CH:15]/[C:16]([NH:18][C:19]2[CH:24]=[CH:23][C:22]([CH2:25][S:26][CH3:27])=[CH:21][CH:20]=2)=[O:17])=[CH:4][CH:3]=1.ClC1C=CC=C(C(OO)=[O:36])C=1.S([O-])([O-])=O.[Na+].[Na+]>O1CCCC1>[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:12]([CH3:13])[N:11]=[CH:10][C:9]=2/[CH:14]=[CH:15]/[C:16]([NH:18][C:19]2[CH:20]=[CH:21][C:22]([CH2:25][S:26]([CH3:27])=[O:36])=[CH:23][CH:24]=2)=[O:17])=[CH:4][CH:3]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 24437Sodium SulfiteHCID 70297m-Chloroperbenzoic acidHCID 69210621(2E)-3-[5-(4-fluorophenyl)-1-methyl-1H-pyrazol-4-yl]-N-{4-[(methylthio)methyl]phenyl}acrylamide

Product 1

HCID 69210481(2E)-3-(5-(4-fluorophenyl)-1-methyl-1H-pyrazol-4-yl)-N-(4-((methylsulfinyl)methyl)phenyl)acrylamideYield 54.4%

Reagents, catalysts & solvents 1

HCID 8028
Tetrahydrofuran
Solvent

Conditions

Temperature
0 °C

Procedure

A mixture of (2E)-3-[5-(4-fluorophenyl)-1-methyl-1H-pyrazol-4-yl]-N-{4-[(methylthio)methyl]phenyl}acrylamide (600 mg), m-chloroperbenzoic acid (387 mg) and tetrahydrofuran (50 mL) was stirred at 0° C. for 20 min. A saturated aqueous sodium sulfite solution was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated aqueous sodium hydrogen carbonate, and then with saturated brine, dried (MgSO4) and concentrated. The obtained solid was recrystallized from acetone-hexane to give (2E)-3-(5-(4-fluorophenyl)-1-methyl-1H-pyrazol-4-yl)-N-(4-((methylsulfinyl)methyl)phenyl)acrylamide (340 mg, yield 54%) as colorless prism crystals. melting point: 240-241° C.

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe ethyl acetate layer was washed with saturated aqueous sodium hydrogen carbonate
  3. dry with materialwith saturated brine, dried (MgSO4)
  4. concentrationconcentrated
  5. customThe obtained solid was recrystallized from acetone-hexane

Sources & evidence

ORD record
ord-1e6f78d5002d4489be4d29faf1bda012
Source dataset
uspto-grants-2008_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07423159B2

Reaction notes

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