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Ammonium Chloride → [4-(Benzyloxy)phenyl](3,5-difluoropyridin-2-yl)methanone

HRID 573340
Notes
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Reaction equation

HRID 573340 reaction equation
[F:1][C:2]1[C:3]([C:9](N(OC)C)=[O:10])=[N:4][CH:5]=[C:6]([F:8])[CH:7]=1.[CH2:15]([O:22][C:23]1[CH:28]=[CH:27][C:26]([Mg]Br)=[CH:25][CH:24]=1)[C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1.[NH4+].[Cl-]>C1COCC1>[CH2:15]([O:22][C:23]1[CH:28]=[CH:27][C:26]([C:9]([C:3]2[C:2]([F:1])=[CH:7][C:6]([F:8])=[CH:5][N:4]=2)=[O:10])=[CH:25][CH:24]=1)[C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 25517Ammonium ChlorideHCID 866889883,5-difluoro-N-methoxy-N-methylpicolinamideHCID 178419638HCID 178419638, compound

Product 1

HCID 66727888[4-(Benzyloxy)phenyl](3,5-difluoropyridin-2-yl)methanone

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
-78 °C

Procedure

To a stirred solution of 3,5-difluoro-N-methoxy-N-methylpyridine-2-carboxamide (2.5 g) in THF (50 mL) was added [4-(benzyloxy)phenyl](bromo)magnesium (1 M solution in THF, 12.3 mL) at −78° C. The mixture was stirred at −78° C. for 3 h, treated with saturated NH4Cl aqueous solution and extracted with AcOEt. The organic layer was dried over MgSO4 and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (AcOEt/hexane). The product was crystallized from AcOEt/hexane to give the title compound (2.3 g).

Workup

  1. extractionextracted with AcOEt
  2. dry with materialThe organic layer was dried over MgSO4
  3. concentrationconcentrated under reduced pressure
  4. customThe residue was purified by silica gel column chromatography (AcOEt/hexane)
  5. customThe product was crystallized from AcOEt/hexane

Sources & evidence

ORD record
ord-d4765b4f9f144aa68ef1447936c458e9
Source dataset
uspto-grants-2015_05
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09029536B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes