Reaction Steps
To a solution of (R)-6-(4-fluorophenyl)-6-(3-hydroxypropyl)-3-((S)-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethyl)-1,3-oxazinan-2-one (61 mg, 0.13 mmol), 5-bromo-2-methylpyrimidine (18 mg, 0.11 mmol), PdCl2(PPh3)2 (6 mg, 10%) and aqueous solution of Cs2CO3 (2 mol/L, 0.13 mL) in 1,4-dioxane (1 mL) was heated to reflux overnight. The reaction was quenched with water. The organic layer was separated, dried and concentrated to give the residue, which was purified by column chromatography to give (R)-6-(4-fluorophenyl)-6-(3-hydroxypropyl)-3-((S)-1-(4-(2-methylpyrimidin-5-yl)phenyl)ethyl)-1,3-oxazinan-2-one (22 mg, 39%). 1H NMR (CDCl3): 1.42 (m, 1H), 1.48 (d, 3H), 1.67 (m, 1H), 1.71-1.99 (m, 4H), 2.11-2.41 (m, 3H), 2.52 (s, 3H), 2.72 (m, 1H), 3.53 (m, 2H), 5.62 (m, 1H), 6.89-7.04 (m, 4H), 7.15-7.33 (m, 4H), 8.70 (s, 2H). LC-MS Method 2 tR=1.184, m/z=450; 1H NMR (CDCl3) 1.20 (d, 1H), 1.27-1.40 (m, 1H), 1.49 (d, 3H), 1.59-1.70 (m, 1H), 1.71-2.07 (m, 4H), 2.11-2.33 (m, 3H), 2.70 (s, 3H), 2.90 (m, 1H), 3.46-3.61 (t, 2H), 5.67 (m, 1H), 6.90-7.11 (m, 4H), 7.26 (m, 4H), 8.57-8.83 (s, 2H).
