Bromide ion → HCID 57855843, compound

HRID 475626Notes

Reaction equation

HRID 475626 reaction equation
[F:1][CH:2]([F:29])[O:3][C:4]1[CH:9]=[CH:8][C:7]([C:10]2[O:11][CH:12]=[C:13]([CH2:15][CH2:16][C:17]([C:19]3[CH:24]=[CH:23][CH:22]=[CH:21][C:20]=3[O:25][CH2:26][CH3:27])=[O:18])[N:14]=2)=[CH:6][C:5]=1[OH:28].[CH2:30]1[CH2:40]CN2C(=NCCC2)C[CH2:31]1.[Br-].O>C(O)C.C(OCC)(=O)C>[CH2:40]([O:28][C:5]1[CH:6]=[C:7]([C:10]2[O:11][CH:12]=[C:13]([CH2:15][CH2:16][C:17]([C:19]3[CH:24]=[CH:23][CH:22]=[CH:21][C:20]=3[O:25][CH2:26][CH3:27])=[O:18])[N:14]=2)[CH:8]=[CH:9][C:4]=1[O:3][CH:2]([F:1])[F:29])[CH:30]=[CH2:31]

Participants

7

Reactant 4

HCID 259Bromide ionHCID 962WaterHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 68984934HCID 68984934, compound

Product 1

HCID 57855843HCID 57855843, compound

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 8857Ethyl AcetateSolvent

Procedure

A 0.15 g quantity of the compound obtained in Example 229 and 0.17 ml of DBU were dissolved in 4 ml of ethanol, 0.14 g of ally bromide was then added to the obtained solution, and heating and refluxing were conducted for 2 hours. After cooling, water was added to the obtained reaction mixture, and ethyl acetate extraction was performed. The organic layer was washed twice with water, concentrated under reduced pressure, and the obtained residue was purified by silica gel column chromatography (n-hexane:ethyl acetate=3:1). The obtained crystals were recrystallized from aqueous 80% ethanol, thereby yielding 90 mg of white powdery 3-[2-(3-allyloxy-4-difluoromethoxyphenyl)oxazol-4-yl]-1-(2-ethoxyphenyl)propan-1-one.

Workup

  1. temperatureheating
  2. temperaturerefluxing
  3. temperatureAfter cooling
  4. washThe organic layer was washed twice with water
  5. concentrationconcentrated under reduced pressure
  6. customthe obtained residue was purified by silica gel column chromatography (n-hexane:ethyl acetate=3:1)
  7. customThe obtained crystals were recrystallized from aqueous 80% ethanol

Sources & evidence

ORD record
ord-214165e3d5bc44ee8e9f72600d357f0c
Source dataset
uspto-grants-2014_01
Patent number
US08637559B2

Reaction notes

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