2-Dicyclohexylphosphino-2',4',6'-triisoprophylbiphenyl → HCID 86763415, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 6-bromo-3-(4-fluorobenzyl)-2H-pyrido[2,3-e][1,3]oxazin-4(3H)-one (110 mg, 0.33 mmol), 2-(4-fluorophenyl)-N-methyl-6-(N-methylmethylsulfonamido)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzofuran-3-carboxamide (149 mg, 0.30 mmol) and K3PO4.3H2O (237 mg, 0.89 mmol) in dioxane/H2O (5 mL/0.2 mL) were added Pd2(dba)3 (13 mg, 0.02 mmol) and X-phos (14 mg, 0.03 mmol) under N2. The mixture was stirred at 110° C. for 1 hour. Then it was filtered and extracted with EtOAc. The combined organic phase was washed with brine, dried over Na2SO4 and concentrated. The residue was purified by flash gel chromatography (DCM:MeOH=100:1) to afford the product of 5-(3-(4-fluorobenzyl)-4-oxo-3,4-dihydro-2H-pyrido[2,3-e][1,3]oxazin-6-yl)-2-(4-fluorophenyl)-N-methyl-6-(N-methylmethylsulfonamido)benzofuran-3-carboxamide (170 mg, yield: 82%). 1H-NMR (CDCl3, 400 MHz) δ 7.94˜7.97 (m, 3H), 7.75˜7.77 (m, 1H), 7.62 (s, 1H), 7.42˜7.45 (m, 1H), 7.33˜7.36 (m, 2H), 7.19 (t, J=7.6 Hz, 2H), 7.05 (t, J=7.6 Hz, 2H), 6.05 (br s, 1H), 5.22 (s, 2H), 4.78 (s, 2H), 3.22 (s, 3H), 2.99 (d, J=4.8 Hz, 3H), 2.93 (s, 3H). MS (M+H)+: 633.

Provenance & Evidence