反应详情

温度

0 °C

To a solution of 2-(2′,3-dimethyl-2,4′-bipyridin-5-yl)acetic acid 156-5 (100 mg, 0.41 mmol) in dichloromethane (3 mL) and methanol (0.5 mL) was added mCPBA (91 mg, 0.41 mmol) in small portions at 0° C. The mixture was stirred for 3 hours at 0° C., and then was concentrated to dryness to give 4-(5-(carboxymethyl)-3-methylpyridin-2-yl)-2-methylpyridine 1-oxide 156-6 as white solid, which was used for next step without further purification. MS m/z 259.1 (M+1).

1. concentrationwas concentrated to dryness