2-(Dicyclohexylphosphino)biphenyl → HCID 57829762, compound

Participants

Reaction Conditions

Reaction Steps

Palladium acetate (7.1 mg, 0.03 mmol) and 2-(dicyclohexylphosphino)biphenyl (23.1 mg, 0.64 mmol) were dissolved in dioxane (3.6 mL) and stirred for 10 minutes at. Sodium tert.-butylate (59 mg, 0.6 mmol), 3-methoxy-4-(4-methyl-imidazol-1-yl)-phenylamine (81 mg, 0.4 mmol) and 1:1 mixture of 2-chloro-4-cyclopentyloxy-6-methyl-pyrimidine and 4-chloro-2-cyclopentyloxy-6-methyl-pyrimidine (94 mg, 0.44 mmol) were added and the reaction was heated to 200° C. for 30 minutes in a microwave oven. The solvent was evaporated under reduced pressure and the residue was taken up in water and extracted twice with ethyl acetate. The combined organic layers were washed with brine, dried over sodium sulfate, filtered and evaporated under reduced pressure to dryness. The residue was purified by column chromatography on silica gel using methylenechloride/methanol (19:1 v/v) as eluent to yield the title compound as a white solid (56 mg, 37%). MS ISP (m/e): 380.1 (100) [(M+H)+]. 1H NMR (CDCl3, 300 MHz): δ (ppm)=7.70 (s, 1H), 7.62 (s, 1H), 7.15 (d, 1H), 7.07 (d, 1H), 7.05 (s, 1H), 6.87 (s, 1H), 6.06 (s, 1H), 5.30 (m, 1H), 3.85 (s, 3H), 2.33 (s, 3H), 2.30 (s, 3H), 1.75-2.00 (m, 6H), 1.60-1.68 (m, 2H).

Provenance & Evidence