1-Bromonaphthalene → HCID 21106086, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of the title C compound, 3-ethylsulfanyl-5-tributylstannyl-imidazo-[1,5-a]pyridine (550 mg, 1.18 mmol) in 1,4-dioxane (8 mL), 1-bromonaphthalene (0.18 mL, 1.29 mmol) is added followed by tris(dibenzylidineacetone)dipalladium(0) (38 mg, 0.041 mmol), tri-t-butylphosphine (80 μL, 0.329 mmol) and cesium fluoride (396 mg, 2.6 mmol). The suspension is heated at 100° C. under nitrogen in a sealed tube for two days. The mixture is cooled, diluted with ethyl ether and filtered through a short silica plug. The solvent is evaporated under reduced pressure, and the residue is purified by flash column chromatography on silica using 10% ethyl acetate in hexanes to yield 3-ethylsulfanyl-5-naphthalen-1-yl-imidazo[1,5-a]pyridine as an amber oil: 1H-NMR (CDCl3) δ 8.01 (dd, J=7.5, 1.8, 1H), 7.93 (d, J=8.1, 1H), 7.61 (s, 1H), 7.58-7.47 (m, 4H), 7.41-7.32 (m, 2H), 6.78 (dd, J=9.0, 6.6, 1H), 6.51 (dd, J=6.6, 1.2, 1H), 2.66 (q, J=7.2, 2H), 0.86 (t, J=7.2, 3H), MS (M+1)+ 305.

Provenance & Evidence