Thionyl Chloride → 3-Chloromethyl-5-(4-trifluoromethyl-phenyl)-1H-pyrazole

HRID 915381Notes

Reaction equation

[F:1][C:2]([F:17])([F:16])[C:3]1[CH:8]=[CH:7][C:6]([C:9]2[NH:13][N:12]=[C:11]([CH2:14]O)[CH:10]=2)=[CH:5][CH:4]=1.S(Cl)([Cl:20])=O>C(Cl)(Cl)Cl>[Cl:20][CH2:14][C:11]1[CH:10]=[C:9]([C:6]2[CH:7]=[CH:8][C:3]([C:2]([F:17])([F:16])[F:1])=[CH:4][CH:5]=2)[NH:13][N:12]=1

Participants

Conditions

Temperature: 60 °C

Procedure

To a solution of [5-(4-trifluoromethyl-phenyl)-1H-pyrazol-3-yl]-methanol (40 mg, 0.17 mmol) in chloroform (4 ml) was added thionyl chloride (0.34 ml, 4.7 mmol) at 0° C. under an argon atmosphere. The solution was stirred at 40° C. for 2 h and at 60° C. for 10 min. The mixture was poured onto ice water/aqueous NaHCO3 1/1, extracted two times with dichloromethane and the combinded extracts were dried over sodium sulfate. Evaporation of the solvent under reduced pressure gave 43 mg (0.165 mmol, 97%) of the title compound as white crystals.

Workup

extractionextracted two times with dichloromethane
dry with materialthe combinded extracts were dried over sodium sulfate
customEvaporation of the solvent under reduced pressure

Sources & evidence

ORD record: ord-8c9feac1e29e478b81b2fcccc84a8349
Source dataset: uspto-grants-2007_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07265149B2

Reaction notes

Loading…