Cl.[F:2][C:3]([F:7])([CH3:6])[CH2:4][NH2:5].[C:8](N1C=CN=C1)([N:10]1[CH:14]=[CH:13][N:12]=[CH:11]1)=[O:9]>CN(C=O)C>[F:2][C:3]([F:7])([CH3:6])[CH2:4][NH:5][C:8]([N:10]1[CH:14]=[CH:13][N:12]=[CH:11]1)=[O:9]TEA (1.3 mL, 0.8 mmol) was added to a solution of 2,2-difluoropropylamine hydrochloride (82 mg, 0.62 mmol) and 1,1′-CARBONYLDIIMIDAZOLE (114 mg, 0.7 mmol) in DMF (3 mL) (clear colorless solution). The solution was used for the synthesis of compound 5 without further isolation of compound 9.
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