m-Chloroperbenzoic acid → HCID 23362947、化合物
反応式
[C:1]([O:4][CH2:5][CH2:6][CH2:7][S:8][C:9]1[N:14]2[CH:15]=[CH:16][N:17]=[C:13]2[CH:12]=[CH:11][CH:10]=1)(=[O:3])[CH3:2].ClC1C=CC=C(C(OO)=[O:26])C=1>C(Cl)(Cl)Cl>[C:1]([O:4][CH2:5][CH2:6][CH2:7][S:8]([C:9]1[N:14]2[CH:15]=[CH:16][N:17]=[C:13]2[CH:12]=[CH:11][CH:10]=1)=[O:26])(=[O:3])[CH3:2]参加物
4
実験手順
To a solution of 5-[3-(acetyloxy)propylthio]imidazo[1,2-a]pyridine (1.00 g, 3.99 mmoles) in chloroform (25 ml) was added m-chloroperbenzoic acid (1.47 g, 5.96 mmoles) with stirring under ice-cooling and the mixture was further stirred under ice-cooling for 1.5 hours. The reaction mixture was washed in turn with an aqueous 20% sodium bisulfite solution and an aqueous saturated sodium bicarbonate solution and dried. After the solvent was distilled off, the residue was purified by column chromatography [eluent:hexane/acetone (1:1)] to obtain 0.19 g of 5-[3-(acetyloxy)propylsulfinyl]imidazo[1,2-a]pyridine (Compound 177) (34.6%, yellow oily product) and 0.19 g of 5-(acetyloxy)propylsulfonyl]imidazo[1,2-a]pyridine (Compound 178) (16.5%, yellow oily product).