Peracetic Acid → 6,6-Dimethyl-2-[6-(6-methyl-1-oxidopyridin-3-yl)-2,3-dihydro-4h-1,4-benzoxazin-4-yl]-6,7-dihydro[1,3]thiazolo[5,4-c]pyridin-4(5h)-one

Participants

Reaction Steps

To a stirred solution of Example 48 (0.08 g, 0.19 mmol) in DCM (10 ml) was added peracetic acid (0.14 mL, 32 wt % in AcOH, 0.59 mmol). The reaction mixture was stirred at r.t. for 16 h, then concentrated in vacuo. Purification by preparative HPLC (Method 6) gave the title compound (0.014 g, 22%) as a white solid. δH (CD3OD) 8.53 (1H, d, J 1.5 Hz), 8.40 (1H, d, J 2.1 Hz), 7.69 (1H, dd, J 8.1 and 1.7 Hz), 7.55 (1H, d, J 8.3 Hz), 7.34 (1H, dd, J 8.7 and 2.3 Hz), 7.10 (1H, d, J 8.5 Hz), 4.46-4.37 (2H, m), 4.19-4.13 (2H, m), 2.92 (2H, s), 2.58 (3H, s), 1.41 (6H, s,). LCMS (ES+) 423.0 (M+H)+, RT 2.48 minutes (Method 1).

Provenance & Evidence