Acetone → methyl 5-(4-(1H-pyrazol-1-yl)benzyl)-4-chloro-2-formylbenzoate

HRID 629323

Reaction equation

HRID 629323 reaction equation
[N:1]1([C:6]2[CH:25]=[CH:24][C:9]([CH2:10][C:11]3[C:12]([Cl:23])=[CH:13][C:14]([CH:21]=C)=[C:15]([CH:20]=3)[C:16]([O:18][CH3:19])=[O:17])=[CH:8][CH:7]=2)[CH:5]=[CH:4][CH:3]=[N:2]1.CC(C)=[O:28].C(#N)C.I([O-])(=O)(=O)=O.[Na+]>[Os]=O.O>[N:1]1([C:6]2[CH:7]=[CH:8][C:9]([CH2:10][C:11]3[C:12]([Cl:23])=[CH:13][C:14]([CH:21]=[O:28])=[C:15]([CH:20]=3)[C:16]([O:18][CH3:19])=[O:17])=[CH:24][CH:25]=2)[CH:5]=[CH:4][CH:3]=[N:2]1

Participants

7

Reactant 4

HCID 180AcetoneHCID 6342AcetonitrileHCID 23667635Sodium periodateHCID 118468414methyl 5-(4-(1H-pyrazol-1-yl)benzyl)-4-chloro-2-vinylbenzoate

Product 1

HCID 118468388methyl 5-(4-(1H-pyrazol-1-yl)benzyl)-4-chloro-2-formylbenzoate

Reagents, catalysts & solvents 2

HCID 142273OxoosmiumCatalyst2×HCID 962WaterSolvent

Procedure

To a solution of methyl 5-(4-(1H-pyrazol-1-yl)benzyl)-4-chloro-2-vinylbenzoate (0.12 g) in a mixed solvent of acetone (2.00 mL)-acetonitrile (2.00 mL)-water (2.00 mL) were added osmium oxide (fixed catalyst I) (0.04 g) and sodium periodate (0.36 g), and the mixture was stirred overnight at room temperature. The reaction mixture was filtered, and the filtrate was extracted with ethyl acetate. The organic layer was washed with water and saturated brine, and dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure to give the title compound as a crude product. This compound was used in the next step without an additional purification.

Workup

  1. filtrationThe reaction mixture was filtered
  2. extractionthe filtrate was extracted with ethyl acetate
  3. washThe organic layer was washed with water and saturated brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. customthe solvent was evaporated under reduced pressure

Sources & evidence

ORD record
ord-4f15677c220e4cd894931f29446e18ef
Source dataset
uspto-grants-2016_04
Patent number
US09315458B2

Linked notes

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