Sodium hydride → (S)-Ethyl 2-(7-(4-(allyloxy)-4-methylpiperidin-1-yl)-5-methyl-2-(((5-methyl-2-((S)-pent-4-en-2-yloxy)benzyl)oxy)methyl)pyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate

Participants

Reaction Steps

(S)-Ethyl 2-(7-(4-(allyloxy)-4-methylpiperidin-1-yl)-2-(iodomethyl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate (0.45 g, 0.770 mmol) was dissolved in 1 mL DMF to this was added (S)-(5-methyl-2-(pent-4-en-2-yloxy)phenyl)methanol (0.191 g, 0.924 mmol) as a solution in 1 mL DMF. NaH-60% wt/wt in oil (47 mg, 1.16 mmol) was added and the reaction mixture was stirred for 5 hours. The reaction was quenched with 1N HCl then transferred to a separatory funnel where the product was extracted with ethyl acetate. The organic solution was dried over Na2SO4. After filtration the solvent was removed under vacuum and the product purified by silica gel chromatography using a Biotage apparatus to isolate the title compound as an oil (114 mg). 1H NMR (400 MHz, CDCl3) δ 1.21-1.24 (15H, overlapping s and m), 1.32 (3H, d), 1.65-1.8 (4H, br m), 2.35 (3H, s), 2.50 (2H, m), 2.61 (3H, s), 3.0-3.5 (4H, very broad m), 3.75 (2H, s), 4.21 (2H, m), 4.45 (1H, m), 4.66 (2H, br s), 4.77 (2H, s), 5.06-5.22 (4H, overlapping m), 5.32 (1H, s), 5.85-6.2 (2H, overlapping m), 6.59 (1H, s), 6.71 (1H, s), 6.77 (1H, d), 7.34 (1H, d).

Provenance & Evidence