Sodium hydride → (S)-ethyl 2-(7-(4-(allyloxy)-4-methylpiperidin-1-yl)-2-(((4-fluoro-2-vinylbenzyl)oxy)methyl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate

Participants

Reaction Steps

To a mixture of (4-fluoro-2-vinylphenyl)methanol (39.1 mg, 0.257 mmol) in DMF (3 mL) at 0° C. was added (S)-ethyl 2-(7-(4-(allyloxy)-4-methylpiperidin-1-yl)-2-(iodomethyl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate (150 mg, 0.257 mmol) and NaH (10.26 mg, 0.257 mmol). It was then quenched with sat. NH4Cl, extracted with EtOAc. The organic layer was dried over MgSO4, filtered and concentrated to obtain an oil, which was then purified by biotage, eluting with 25% EtOAc/hexane to isolate (S)-ethyl 2-(7-(4-(allyloxy)-4-methylpiperidin-1-yl)-2-(((4-fluoro-2-vinylbenzyl)oxy)methyl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate (70 mg, 0.115 mmol, 44.8% yield) as an oil. LCMS (M+1)=609.3.

Provenance & Evidence