Nitrogen → HCID 68350442, compound

Participants

Reaction Conditions

Reaction Steps

A solution of (S)-benzyl 8-((6-bromo-3-carbamoylpyrrolo[1,2-b]pyridazin-4-yl)amino)-6-azaspiro[3.4]octane-6-carboxylate (120.0 mg, 0.241 mmol) and 1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (100 mg, 0.482 mmol) in 1,4-dioxane (3.20 mL) and potassium phosphate (2.0M) (0.361 mL, 0.722 mmol) was degassed for several minutes with N2 gas. 1,1′-Bis(diphenylphosphino)ferrocenepalladium(II) dichloride dichloromethane complex (19.81 mg, 0.024 mmol) was added, degassing was continued for 1 more minute, vial was sealed, and the contents were heated @ 110° C. for 45 minutes. HPLC and LC/MS after 30 min indicated that the reaction had essentially proceeded to completion (m/e 500.16, M+H for desired product). After cooling to r. t., the reaction was diluted with EtOAc and water. The layers were separated, the EtOAc layer was washed with water, brine, dried over Na2SO4, and concentrated under vacuum to yield a solid. Trituration with ether yielded 124.4 mg of the title compound as a pale mustard-colored solid. LC/MS: m/e 500.15 (M+H). This material was used in the next step without further purification.

Provenance & Evidence