Sodium hydride → (S)-ethyl 2-(7-(4-(allyloxy)-4-methylpiperidin-1-yl)-2-(((2-(but-3-en-1-yl)benzyl)oxy)methyl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate

Participants

Reaction Conditions

Reaction Steps

To a mixture of (2-(but-3-en-1-yl)phenyl)methanol (35.1 mg, 0.216 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 (115 mg, 0.197 mmol) and NaH (7.87 mg, 0.197 mmol). It was stirred at 0° C. for 4 h, then quenched with water, extracted with EtOAc. The organic layer was dried over MgSO4, filtered and concentrated. The residue was purified by biotage, eluting with 20% EtOac/hexane to obtain (S)-ethyl 2-(7-(4-(allyloxy)-4-methylpiperidin-1-yl)-2-(((2-(but-3-en-1-yl)benzyl)oxy)methyl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate (55 mg, 0.089 mmol, 45.2% yield) as an oil. LCMS (M+1)=619.4.

Provenance & Evidence