Water → 6,6-Dimethyl-2-[6-(pyrimidin-5-yl)-2,3-dihydrobenzo[1,4]oxazin-4-yl]-6,7-dihydro-[1,3]thiazolo[5,4-c]pyridin-4(5h)-one

Participants

Reaction Steps

A mixture of Example 39 (0.135 g, 0.34 mmol), 5-pyrimidinylboronic acid (0.084 g, 0.68 mmol), K3PO4 (0.143 g, 0.68 mmol), water (1 mL) and tetrakis(triphenylphosphine)palladium(0) (catalytic) in DME (5 mL) was heated to 120° C. under microwave irradiation for 30 minutes. After cooling to r.t. the reaction mixture was filtered and purified by preparative HPLC (Method 7) to give the title compound (0.008 g, 6%) as a pale yellow solid. δH (CD3OD) 9.12 (1H, s), 9.01 (2H, s), 8.44 (1H, d, J 2.3 Hz), 7.40 (1H, dd, J 8.5 and J 2.3 Hz), 7.14 (1H, d, J 8.5 Hz), 4.47-4.40 (2H, m), 4.21-4.14 (2H, m), 2.92 (2H, s), 1.41 (6H, s). Exchangeable proton was not observed. LCMS (ES+) 393.0 (M)+, RT 2.83 minutes (Method 2).

Provenance & Evidence