Hydrochloric Acid → HCID 178517474, compound

HRID 1880711Notes

Reaction equation

HRID 1880711 reaction equation
[F:1][C:2]([F:14])([F:13])[CH2:3][C:4]1[CH:9]=[CH:8][N:7]=[C:6]([C:10]([NH2:12])=O)[CH:5]=1.[C:15](N1C=CN=C1)(N1C=CN=C1)=[O:16].[N:27]12CCCN=C1CCCCC2.Cl.[OH2:39]>O1CCCC1>[F:1][C:2]([F:14])([F:13])[CH2:3][C:4]1[CH:9]=[CH:8][N:7]=[C:6]([C:10]2[NH:27][O:39][C:15](=[O:16])[N:12]=2)[CH:5]=1

Participants

7

Reactant 5

HCID 313Hydrochloric AcidHCID 962WaterHCID 682631,1'-CarbonyldiimidazoleHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 86647337HCID 86647337, compound

Product 1

HCID 178517474HCID 178517474, compound

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To 3 ml of tetrahydrofuran were added 0.3 g of 4-(2,2,2-trifluoroethyl)pyridine-2-carboxamide=oxime and 0.39 g of 1,1′-carbonyldiimidazole, and the mixture was stirred at room temperature for 2 hours. Thereafter, 0.37 g of 1,8-diazabicyclo[5,4,0]undec-7-ene was added at 0° C., and the mixture was stirred at room temperature for 4 hours. To the reaction solution were added water and 10% HCl, the resultant solution was extracted with ethyl acetate three times, and the organic layers were combined, dried with anhydrous magnesium sulfate, and concentrated. The residue was subjected to silica gel column chromatography to obtain 0.33 g of 3-[4-(2,2,2-trifluoroethyl)pyridin-2-yl]-1,2,4-oxadiazol-5-one (present compound (60)).

Workup

  1. stirringthe mixture was stirred at room temperature for 4 hours
  2. extractionthe resultant solution was extracted with ethyl acetate three times
  3. dry with materialdried with anhydrous magnesium sulfate
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-97a9474e89464d45a3d8ca7aa5b57733
Source dataset
uspto-grants-2012_11
Patent number
US08318776B2

Reaction notes

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