Binap, (A+-)- → HCID 11273431, compound

Participants

Reaction Conditions

Reaction Steps

To a mixture of 7-(3-bromophenyl)-5-methyl-N-(3,4,5-trimethoxyphenyl)-imidazo[5,1-f][1,2,4]triazin-2-amine (Example 9) (20 mg, 0.042 mmol), 3-amino-N-cyclopropyl-benzenesulfonamide (10.8 mg, 0.051 mmol), (S)-(−)-2,2′-Bis(diphenylphosphino)-1,1′-binaphthyl ((S)-BINAP) (15.9 mg, 0.026 mmol), Tris(dibenzylidineacetone)dipalladium (0) (7.8 mg, 0.008 mmol) and sodium t-butoxide (13.8mg, 0.144 mmol) was added 1,4-dioxane (1.5 mL). In a sealed reaction vessel, the mixture was heated with microwave radiation at 140° C. for 60 minutes. After cooling to room temperature, diluted mixture with methanol (5 mL) and ethyl acetate (5 mL) followed by filtration over celite. Removed solvent under reduced pressure and diluted brown residue in DMSO (1.0 mL). Injected (2×0.5mL) on an Agilent reverse phase prep LC subjected to a gradient elution using acetonitrile(0.1% Formic acid):water(0.1% Formic acid) (10:90 to 90:10). Combined appropriate fractions and removed solvent under reduced pressure. The solid material was dissolved in methanol and dichloromethane and added silica gel (100 mg). Followed by evaporation of the volatiles under reduced pressure, the pre-adsorbed solids were loaded into a solid loading cartridge and subjected to a gradient elution using ethyl acetate:hexanes (30:70 to 90:10) using a RediSep silica gel cartridge (4.2 g; ISCO). The appropriate fractions were combined and concentrated under reduced pressure to give solid material that was again dissolved in dichlormethane and adsorbed onto a silica gel prep plate (20 cm×20 cm, 1000 μm). Eluted with ethyl acetate:hexanes (70:30), removed silica from plate and washed with ethyl acetate/methanol/dichloromethane (25 mL). Removed solvent under reduced pressure to give N-cyclopropyl-3-[(3-{5-methyl-2-[(3,4,5-trimethoxyphenyl)-amino]imidazo[5,1-f][1,2,4]triazin-7-yl}phenyl)amino]benzenesulfonamide (0.0076 g) as a yellow solid. 1H NMR (CD3OD) δ9.01 (s, 1H), 8.09 (dd, J=2.0, 1.6 Hz, 1H), 7.85-7.82 (m, 1H), 7.60-7.59 (m, 1H), 7.4 (dd, J=7.9, 8.0 Hz, 1H), 7.33-7.29 (m, 2H), 7.28-7.25 (m, 1H), 7.21 (ddd, J=8.2, 2.4, 1.1 Hz, 1H), 7.03 (s, 2H), 3.74 (s, 6H), 3.69 (s, 3H), 2.57 (s, 3H), 2.15-2.10 (m, 1H), 0.49-0.45 (m, 4H). MS m/z 602 (M+1).

Provenance & Evidence