反应详情

Dissolve 3′-phenyl-3,4,5,6-tetrahydro-2H-[1,2′]bipyrazinyl (0.28 g, 1.18 mmol) in DCE (5 mL). Add 1-ethyl-5-methyl-1H-pyrazole-4-carbaldehyde (0.24 g, 1.76 mmol) and stir at room temperature for 20 min. Add sodium triacetoxyborohydride (0.5 g, 2.36 mmol) followed by acetic acid (0.07 mL, 1.24 mmol). Stir at room temperature for 16 hr. Purify via SCX chromatography, followed by silica gel chromatography, eluting with 3:97 to 7:93 7 N ammonia in methanol:ethyl acetate, to give the free base of the title compound (0.22 g, 52%). MS (ES): m/z=363.3 [M+H]+.

1. customPurify via SCX chromatography
2. washeluting with 3:97 to 7:93 7 N ammonia in methanol