Formaldehyde → {8-(3,4-Dichlorophenyl)-3-[3-methoxy-4-(2-methyl-1,3-oxazol-5-yl)phenyl]-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridin-8-yl}methanol

HRID 1398126Notes

Reaction equation

HRID 1398126 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([CH:9]2[CH2:14][CH2:13][CH2:12][N:11]3[C:15]([C:18]4[CH:23]=[CH:22][C:21]([C:24]5[O:28][C:27]([CH3:29])=[N:26][CH:25]=5)=[C:20]([O:30][CH3:31])[CH:19]=4)=[N:16][N:17]=[C:10]23)[CH:5]=[CH:6][C:7]=1[Cl:8].[H-].[Na+].[CH2:34]=[O:35]>CN(C=O)C.O>[Cl:1][C:2]1[CH:3]=[C:4]([C:9]2([CH2:34][OH:35])[CH2:14][CH2:13][CH2:12][N:11]3[C:15]([C:18]4[CH:23]=[CH:22][C:21]([C:24]5[O:28][C:27]([CH3:29])=[N:26][CH:25]=5)=[C:20]([O:30][CH3:31])[CH:19]=4)=[N:16][N:17]=[C:10]23)[CH:5]=[CH:6][C:7]=1[Cl:8]

Participants

6

Reactant 3

HCID 712FormaldehydeHCID 24758Sodium hydrideHCID 666080628-(3,4-Dichlorophenyl)-3-[3-methoxy-4-(2-methyl-1,3-oxazol-5-yl)phenyl]-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridine

Product 1

HCID 66604219{8-(3,4-Dichlorophenyl)-3-[3-methoxy-4-(2-methyl-1,3-oxazol-5-yl)phenyl]-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridin-8-yl}methanolYield 13.3%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To a mixture of 8-(3,4-dichlorophenyl)-3-[3-methoxy-4-(2-methyl-1,3-oxazol-5-yl)phenyl]-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridine (300 mg) in DMF (5 mL) was added sodium hydride (60%, 31.6 mg) under ice-cooling, and the mixture was stirred for 1 hr under a nitrogen atmosphere. Paraformaldehyde (39.6 mg) was added to the reaction mixture, and the mixture was stirred for 30 min. The reaction mixture was diluted with water, and the mixture was extracted with ethyl acetate. The extract was washed with water and saturated brine, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (methanol/ethyl acetate) to give the title compound (42.5 mg).

Workup

  1. temperaturecooling
  2. stirringthe mixture was stirred for 30 min
  3. extractionthe mixture was extracted with ethyl acetate
  4. washThe extract was washed with water and saturated brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customthe solvent was evaporated under reduced pressure
  7. customThe residue was purified by silica gel column chromatography (methanol/ethyl acetate)

Sources & evidence

ORD record
ord-b5ed4977e7af4293a09708b11874a7b0
Source dataset
uspto-grants-2014_12
Patent number
US08901309B2

Reaction notes

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