m-Chloroperbenzoic acid → 2-(Trimethylsilyl)furo[3,2-B]pyridine 4-oxide
反応式
[CH3:1][Si:2]([CH3:13])([CH3:12])[C:3]1[O:11][C:10]2[C:5](=[N:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=1.C1C=C(Cl)C=C(C(OO)=[O:22])C=1>C(Cl)Cl>[CH3:1][Si:2]([CH3:13])([CH3:12])[C:3]1[O:11][C:10]2[C:5](=[N+:6]([O-:22])[CH:7]=[CH:8][CH:9]=2)[CH:4]=1参加物
4
実験手順
2-(Trimethylsilyl)furo[3,2-b]pyridine (14.68 g, 76.7 mmol) was dissolved in 80 mL DCM and cooled to 0° C. m-CPBA (33.1 g, 192 mmol) was dissolved in 160 mL DCM and slowly added to the reaction vessel. Upon complete addition, the reaction was warmed to RT and stirred for three hours. Reaction was diluted with DCM and washed twice with saturated sodium bicarbonate solution. 30 g of carbonate scavenger beads (—30 mmol) were added to the organic layer and the solution was stirred for 30 minutes. The reaction was filtered, washed with brine, dried with sodium sulfate, filtered, and concentrated. The material was purified via column chromatography (gradient elution 0-10% MeOH:DCM) to afford 2-(trimethylsilyl)furo[3,2-b]pyridine N-oxide as a light brown oil that solidified under high vacuum. MS: M+H+=208.2