4-Toluenesulfonyl chloride → HCID 89996125, compound

Participants

Reaction Steps

2-(4-Iodo-1H-pyrazol-1-yl)ethanol (Preparation 57, 535 mg, 2.248 mmol) in DCM (11 mL) was treated with triethylamine (1.55 mL, 11.14 mmol) at 0° C. Tosyl chloride (857 mg, 4.50 mmol) was added at 0° C. and the mixture was allowed to warm to room temperature for 18 hours. The organic layer was washed with water, HCl 1M and water (twice). The organic layers were dried, concentrated and purified by silica gel column chromatography eluting with 0 to 30% EtOAc in cyclohexane to give the title compound (817 mg, 93%).

Provenance & Evidence