7-Difluoromethyl-5-(4-trifluoromethyl-phenyl)-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid → 3-{5-[7-Difluoromethyl-5-(4-trifluoromethyl-phenyl)-pyrazolo[1,5-a]pyrimidin-3-yl]-[1,2,4]oxadiazol-3-yl}-benzenesulfonamide

HRID 1784572Notes

Reaction equation

HRID 1784572 reaction equation
[F:1][CH:2]([F:25])[C:3]1[N:8]2[N:9]=[CH:10][C:11]([C:12]([OH:14])=O)=[C:7]2[N:6]=[C:5]([C:15]2[CH:20]=[CH:19][C:18]([C:21]([F:24])([F:23])[F:22])=[CH:17][CH:16]=2)[CH:4]=1.O[NH:27][C:28](=[NH:39])[C:29]1[CH:34]=[CH:33][CH:32]=[C:31]([S:35](=[O:38])(=[O:37])[NH2:36])[CH:30]=1>>[F:25][CH:2]([F:1])[C:3]1[N:8]2[N:9]=[CH:10][C:11]([C:12]3[O:14][N:39]=[C:28]([C:29]4[CH:30]=[C:31]([S:35]([NH2:36])(=[O:37])=[O:38])[CH:32]=[CH:33][CH:34]=4)[N:27]=3)=[C:7]2[N:6]=[C:5]([C:15]2[CH:20]=[CH:19][C:18]([C:21]([F:23])([F:24])[F:22])=[CH:17][CH:16]=2)[CH:4]=1

Participants

3

Reactant 2

HCID 666502687-Difluoromethyl-5-(4-trifluoromethyl-phenyl)-pyrazolo[1,5-a]pyrimidine-3-carboxylic acidHCID 178513322HCID 178513322, compound

Product 1

HCID 160686663-{5-[7-Difluoromethyl-5-(4-trifluoromethyl-phenyl)-pyrazolo[1,5-a]pyrimidin-3-yl]-[1,2,4]oxadiazol-3-yl}-benzenesulfonamide

Procedure

The title compound was prepared from 7-difluoromethyl-5-(4-trifluoromethyl-phenyl)-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid (example C.1) (179 mg, 0.5 mmol) and N-hydroxy-3-sulfamoyl-benzamidine [CAS-No. 9000-88-7] (161 mg, 0.75 mmol) according to general procedure II. Obtained after purification by column chromatography (dichloromethane/MeOH/NH4OH) and crystallization (ethyl acetate/hexane) as a yellow solid (198 mg, 74%). MS (ISN) 535.3 [(M−H)−]; mp 267° C.

Workup

  1. customObtained
  2. customafter purification
  3. customby column chromatography (dichloromethane/MeOH/NH4OH) and crystallization (ethyl acetate/hexane) as a yellow solid (198 mg, 74%)

Sources & evidence

ORD record
ord-68e2e13495354ba1abaa3f65d4008f5f
Source dataset
uspto-grants-2009_03
Patent number
US07504404B2

Reaction notes

Loading…