N-bromobutanimide → HCID 68628857、化合物

反応式

[CH2:1]([O:5][C:6]([C:8]1[N:13]=[C:12]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[C:11]2[C:20]([CH3:23])=[N:21][S:22][C:10]=2[C:9]=1[O:24][C:25](=[O:30])[C:26]([CH3:29])([CH3:28])[CH3:27])=[O:7])[CH2:2][CH2:3][CH3:4].[Br:31]N1C(=O)CCC1=O>C(Cl)(Cl)(Cl)Cl.C(OOC(=O)C1C=CC=CC=1)(=O)C1C=CC=CC=1>[CH2:1]([O:5][C:6]([C:8]1[N:13]=[C:12]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[C:11]2[C:20]([CH2:23][Br:31])=[N:21][S:22][C:10]=2[C:9]=1[O:24][C:25](=[O:30])[C:26]([CH3:29])([CH3:28])[CH3:27])=[O:7])[CH2:2][CH2:3][CH3:4]

参加物

実験手順

To a solution of 7-(2,2-dimethyl-propionyloxy)-3-methyl-4-phenyl-isothiazolo[4,5-c]pyridine-6-carboxylic acid butyl ester (392 mg) in CCl4 (1.8 mL) was added N-bromosuccinimide (172 mg) and benzoyl peroxide (11.1 mg). The reaction mixture was refluxed for 18 h. After cooling to r.t. the mixture was filtered. The filtrate was concentrated in vacuo and purified by flash chromatography on silica gel. Eluting with 0-20% EtOAc/CH2Cl2 gave the title compound (398 mg) as a yellow oil: MS (m/z) 505.1 (M+1), 507.1 (M+1).