[CH3:1][C:2]1[CH:15]=[C:5]2[C:6]([C@@H:10]3[CH2:12][C@H:11]3[CH2:13][NH2:14])=[CH:7][CH:8]=[CH:9][N:4]2[N:3]=1.C(N(CC)CC)C.[CH:23]1([C:26](Cl)=[O:27])[CH2:25][CH2:24]1>O1CCCC1.C(=O)([O-])O.[Na+]>[CH3:1][C:2]1[CH:15]=[C:5]2[C:6]([C@@H:10]3[CH2:12][C@H:11]3[CH2:13][NH:14][C:26]([CH:23]3[CH2:25][CH2:24]3)=[O:27])=[CH:7][CH:8]=[CH:9][N:4]2[N:3]=1
To a solution of trans-1-[2-(2-methylpyrazolo[1,5-a]pyridin-4-yl)cyclopropyl]methanamine (100 mg, 0.497 mmol) and triethylamine (83.2 μL, 0.596 mmol) in tetrahydrofuran (5 mL) was added cyclopropanecarbonyl chloride (49.6 μL, 0.547 mmol) under ice-cooling, and the mixture was stirred under ice-cooling for 10 min. The reaction solution was diluted with saturated aqueous sodium hydrogen carbonate solution. The solvent was evaporated under reduced pressure and the residue was purified by silica gel column chromatography (ethyl acetate/hexane=35/65→90/10) to give the title compound (87.0 mg, yield 65%).
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