N-(1-adamantylmethyl)-2-bromo-5-chloroisonicotinamide → tert-Butyl 3-(4-{[(1-adamantylmethyl)amino]carbonyl}-5-chloropyridin-2-yl)prop-2-ynyl[3-(tetrahydro-2H-pyran-2-yloxy)propyl]carbamate

Participants

Reaction Steps

A suspension of N-(1-adamantylmethyl)-2-bromo-5-chloroisonicotinamide (Example 2(i)) (0.43 g) and tert-butyl prop-2-ynyl[3-(tetrahydro-2H-pyran-2-yloxy)propyl]carbamate (Example 2(ii)) (0.60 g) in anhydrous acetonitrile (6 ml) and triethylamine (6 ml) was purged with nitrogen for 5 minutes and then copper (I) iodide (0.004 g) and bis-triphenyphosphine palladium dichloride (0.014 g) were added. The mixture was stirred under nitrogen for 2 hours. The mixture was concentrated and the residue was purified by chromatography on silica gel eluting with iso-hexane:ethyl acetate (19:1 to 7:3) to afford the sub-titled compound (0.39 g) as a yellow gum.

Provenance & Evidence