Potassium Phosphate, Tribasic → 2-(5-(9-cyclopropyl-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepin-2-yl)-3-methyl-1H-1,2,4-triazol-1-yl)propan-1-ol

Participants

Reaction Conditions

Reaction Steps

A microwave vial was charged with a solution of 2-[5-(8-Bromo-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulen-2-yl)-3-methyl-[1,2,4]triazol-1-yl]-propan-1-ol (0.140 g, 0.000346 mol) and Potassium phosphate (0.220 g, 0.00104 mol) in Tetrahydrofuran (2.0 mL) and Water (2.0 mL). The mixture was thoroughly purged with N2. 2-cyclopropyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (0.189 mL, 0.00104 mol) and Tetrakis(triphenylphosphine)palladium(0) (0.0400 g, 0.0000346 mol) were added and the vial was sealed immediately. The reaction was heated in the microwave to 120° C. for 20 minutes. The reaction was diluted with methylene chloride and filtered through celite. Saturated NH4Cl was added and the mixture was extracted 3 times with methylene chloride. The organic layers were combined, dried with MgSO4 and concentrated. The crude was purified by reverse-phase HPLC to give 35 mg of 270 as a white solid. MS (ESI+) 366.2. 1H NMR (500 MHz, DMSO) δ 8.26 (d, J=8.3 Hz, 1H), 7.82 (s, 1H), 6.86 (dd, J=8.4, 1.7 Hz, 1H), 6.75 (d, J=1.7 Hz, 1H), 5.73-5.57 (m, 1H), 4.85 (t, J=5.4 Hz, 1H), 4.50-4.43 (m, 4H), 3.76 (ddd, J=10.7, 7.5, 6.0 Hz, 1H), 3.68-3.62 (m, 1H), 2.24 (s, 3H), 1.97-1.85 (m, 1H), 1.39 (d, J=6.7 Hz, 3H), 1.02-0.93 (m, 2H), 0.75-0.67 (m, 2H)

Provenance & Evidence