Triethylamine → 5-[3-(Phthalimido)propylthio]imidazo[1,2-a]pyridine

反応式

[SH:1][C:2]1[N:7]2[CH:8]=[CH:9][N:10]=[C:6]2[CH:5]=[CH:4][CH:3]=1.Br[CH2:12][CH2:13][CH2:14][N:15]1[C:19](=[O:20])[C:18]2=[CH:21][CH:22]=[CH:23][CH:24]=[C:17]2[C:16]1=[O:25].C(N(CC)CC)C>C(O)C>[C:16]1(=[O:25])[N:15]([CH2:14][CH2:13][CH2:12][S:1][C:2]2[N:7]3[CH:8]=[CH:9][N:10]=[C:6]3[CH:5]=[CH:4][CH:3]=2)[C:19](=[O:20])[C:18]2=[CH:21][CH:22]=[CH:23][CH:24]=[C:17]12

参加物

実験手順

To a suspension of 5-mercaptoimidazo[1,2-a]pyridine (3.00g, 20 mmoles) and N-[3-(bromo)propyl]phthalimide (5.90 g, 22 mmoles) in ethanol (200 ml) was added triethylamine (4.2 ml, 30 mmoles) and the mixture was stirred at room temperature for 1 hour and heated at reflux for 1 hour. After the solvent was distilled off, chloroform was added to the residue, which was washed with water, dried over anhydrous magnesium sulfate and the solvent was distilled off. Then, the residue was purified by column chromatography (eluent: ethyl acetate) to obtain 4.79 g of the desired product (71.1%, colorless crystals).