Diisopropylethylamine → (R)-N-(4-((3-(dimethylamino)pyrrolidin-1-yl)methyl)-3-(trifluoromethyl)phenyl)-3-(imidazo[1,2-b]pyridazin-3-ylethynyl)-4-methylbenzamide

Participants

Reaction Steps

A mixture of 3-ethynylimidazo[1,2-b]pyridazine (0.051 g, 0.34 mmol), 0.150 g (0.28 mmol) of (R)—N-(4-((3-(dimethylamino)pyrrolidin-1-yl)methyl)-3-(trifluoromethyl)phenyl)-3-iodo-4-methylbenzamide, 0.016 g (0.014 mmol) of Pd(PPh3)4, 0.004 g (0.021 mmol) of CuI, and 0.09 mL (0.51 mmol) of N,N-diisopropylethylamine in 3.5 mL of DMF was stirred at ambient temperature, under an atmosphere of N2, for 3 days (reaction pushed to completion with additional equivalents of reagents and heating to 80° C.). The reaction mixture was concentrated and the crude product was purified by silica gel chromatography (eluted with 0-10% MeOH/DCM; MeOH was pre-saturated with ammonia gas) to provide 0.020 g of product as a solid: 547 m/z (M+H).

Provenance & Evidence