Thionyl Chloride → HCID 71765536, compound
Reaction equation
O[CH2:2][C:3]1[CH:23]=[C:6]2[C:7](=[O:22])[NH:8][C:9]([C:11]3[CH:16]=[CH:15][C:14]([O:17][C:18]([F:21])([F:20])[F:19])=[CH:13][CH:12]=3)=[CH:10][N:5]2[N:4]=1.S(Cl)([Cl:26])=O>ClCCl>[Cl:26][CH2:2][C:3]1[CH:23]=[C:6]2[C:7](=[O:22])[NH:8][C:9]([C:11]3[CH:16]=[CH:15][C:14]([O:17][C:18]([F:21])([F:20])[F:19])=[CH:13][CH:12]=3)=[CH:10][N:5]2[N:4]=1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
82 mg (0.252 mmol) 2-Hydroxymethyl-6-(4-trifluoromethoxy-phenyl)-5H-pyrazolo[1,5-a]pyrazin-4-one are treated with thionyl chloride in dichloromethane similar to WO2010/043676 (example G02) to give 2-chloromethyl-6-(4-trifluoromethoxy-phenyl)-5H-pyrazolo[1,5-a]pyrazin-4-one as pale pink crystals; HPLC/MS 1.91 min (C), [M+H] 344;