Thionyl Chloride → Isoxazole, 4-(chloromethyl)-5-methyl-3-phenyl-

HRID 1897184Notes

Reaction equation

HRID 1897184 reaction equation
[CH3:1][C:2]1[O:6][N:5]=[C:4]([C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=2)[C:3]=1[CH2:13]O.S(Cl)([Cl:17])=O>ClCCl.O>[Cl:17][CH2:13][C:3]1[C:4]([C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=2)=[N:5][O:6][C:2]=1[CH3:1]

Participants

5

Reactant 2

HCID 24386Thionyl ChlorideHCID 2776149(5-Methyl-3-phenyl-1,2-oxazol-4-yl)methanol

Product 1

HCID 11052826Isoxazole, 4-(chloromethyl)-5-methyl-3-phenyl-Yield 93%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

To a solution of (5-methyl-3-phenyl-isoxazol-4-yl)-methanol (4.5 g, 236 mmol) in dichloromethane (50 mL) was added at 0° C. thionyl chloride (3.6 g, 2.7 mL, 306 mmol) dropwise over 3 min and the solution stirred at 0° C. for 2 h. After this time, the mixture was diluted with water (50 mL) and the organic phase separated and washed with brine. The aqueous phase was extracted with dichloromethane and the combined extracts dried over sodium sulfate, filtered and evaporated to afford the title compound (4.6 g, 93%) which was obtained as a light brown liquid. MS: m/e=208.1 [M+H]+.

Workup

  1. customthe organic phase separated
  2. washwashed with brine
  3. extractionThe aqueous phase was extracted with dichloromethane
  4. dry with materialthe combined extracts dried over sodium sulfate
  5. filtrationfiltered
  6. customevaporated

Sources & evidence

ORD record
ord-35f75b9336964925b5614e8c3221911d
Source dataset
uspto-grants-2013_08
Patent number
US08518974B2

Reaction notes

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