5-Bromo-2,4-difluorobenzenesulfonamide → 5-[7-Cyclopropyl-5-(3,4-dichloro-phenyl)-pyrazolo[1,5-a]pyrimidin-3-ylethynyl]-2,4-difluoro-benzenesulfonamide
Reaction equation
[CH:1]1([C:4]2[N:9]3[N:10]=[CH:11][C:12]([C:13]#[CH:14])=[C:8]3[N:7]=[C:6]([C:15]3[CH:20]=[CH:19][C:18]([Cl:21])=[C:17]([Cl:22])[CH:16]=3)[CH:5]=2)[CH2:3][CH2:2]1.Br[C:24]1[C:25]([F:35])=[CH:26][C:27]([F:34])=[C:28]([S:30]([NH2:33])(=[O:32])=[O:31])[CH:29]=1>>[CH:1]1([C:4]2[N:9]3[N:10]=[CH:11][C:12]([C:13]#[C:14][C:24]4[C:25]([F:35])=[CH:26][C:27]([F:34])=[C:28]([S:30]([NH2:33])(=[O:31])=[O:32])[CH:29]=4)=[C:8]3[N:7]=[C:6]([C:15]3[CH:20]=[CH:19][C:18]([Cl:21])=[C:17]([Cl:22])[CH:16]=3)[CH:5]=2)[CH2:3][CH2:2]1Participants
3
Procedure
The title compound was prepared from 7-cyclopropyl-5-(3,4-dichloro-phenyl)-3-ethynyl-pyrazolo[1,5-a]pyrimidine (example C.8) (82 mg, 0.25 mmol) and commercially available 5-bromo-2,4-difluoro-benzenesulfonamide (68 mg, 0.25 mmol) according to general procedure II. Obtained as a yellow solid (39 mg, 30%). MS (ISP) 519.0 [(M+H)+]; mp 280-281° C.