5-Bromo-2,4-difluorobenzenesulfonamide → 5-[7-Cyclopropyl-5-(4-trifluoromethyl-phenyl)-pyrazolo[1,5-a]pyrimidin-3-ylethynyl]-2,4-difluoro-benzenesulfonamide

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Reaction Steps

The title compound was prepared from 7-cyclopropyl-3-ethynyl-5-(4-trifluoromethyl-phenyl)-pyrazolo[1,5-a]pyrimidine (example C.7) (82 mg, 0.25 mmol) and 5-bromo-2,4-difluoro-benzenesulfonamide (68 mg, 0.25 mmol) according to general procedure II. Obtained as a yellow solid (85 mg, 65%). MS (ISN) 517.0 [(M−H)−]; mp 255–257° C.

Provenance & Evidence