Ethylurea → HCID 71623037, compound

Participants

Reaction Conditions

Reaction Steps

Compound ii (210 mg, 0.53 mmol) and N-ethylurea (93 mg, 1.1 mmol) were dissolved in degassed dioxane (2 mL) under an atmosphere of nitrogen. Sodium tert-butoxide (102 mg, 1.1 mmol), X-phos (2-(Dicyclohexylphosphino)-2′,4′,6′-tri-1-propyl-1,1′-biphenyl, 50 mg, 0.1 mmol) and palladium(0)bis(dibenzylideneacetone) (50 mg, 0.05 mmol) were added sequentially. The mixture was heated at 120° C. in a microwave reactor for 60 min. The mixture was cooled to RT, filtered then evaporated to dryness. The residue was purified by flash chromatography (40 g GraceResolv silica cartridge, 0-15% MeOH in DCM) to yield Compound 15 as an off white solid (160 mg, 68%). 1H NMR (400 MHz, DMSO-d6): δ 10.53 (s, 1H), 10.06 (s, 1H), 9.24 (s, 1H), 8.86 (s, 1H), 8.64 (s, 1H), 8.32 (d, J=4.8 Hz, 1H), 8.12 (d, J=7.6 Hz, 1H), 7.95 (d, J=8.4 Hz, 2H), 7.80 (m, 1H), 7.55 (s, 1H), 7.40 (d, J=8.8 Hz, 311), 4.32-4.27 (m, 2H), 3.17-3.14 (m, 2H), 1.34 (t, J=7.2 Hz, 3H), 1.12-1.09 (m, 3H). [M+H]+ m/z=449.16.

Provenance & Evidence