Carbon Tetrachloride → 3-(Chloromethyl)-5-[3,5-bis(trifluoromethyl)phenyl]isoxazole
Reaktionsgleichung
[F:1][C:2]([F:21])([F:20])[C:3]1[CH:4]=[C:5]([C:13]2[O:17][N:16]=[C:15]([CH2:18]O)[CH:14]=2)[CH:6]=[C:7]([C:9]([F:12])([F:11])[F:10])[CH:8]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C(Cl)(Cl)(Cl)[Cl:42]>>[Cl:42][CH2:18][C:15]1[CH:14]=[C:13]([C:5]2[CH:4]=[C:3]([C:2]([F:21])([F:20])[F:1])[CH:8]=[C:7]([C:9]([F:12])([F:11])[F:10])[CH:6]=2)[O:17][N:16]=1Komponenten
4
Reaktionsbedingungen
- Temperatur
- 75 °C
Versuchsvorschrift
To a solution of {5-[3,5-bis(trifluoromethyl)phenyl]-3-isoxazolyl}methanol (Example 323B) (0.100 g, 0.32 mmol) in dry carbon tetrachloride (15 mL) was added PS-triphenylphosphine (0.292 g, 2.2 mmol/g, 0.64 mmol). The reaction was heated at 75° C. overnight. The resin was filtered and washed with carbon tetrachloride. Concentration in vacuo afforded the title compound, which was used for the next step without further purification.