Potassium Hydroxide → 4-Bromo-2-(p-chlorophenyl)-1-(ethoxymethyl)-5-(trifluoromethyl)pyrrole-3-carboxylic acid
反応式
[Br:1][C:2]1[C:3]([C:22]([O:24]C)=[O:23])=[C:4]([C:15]2[CH:20]=[CH:19][C:18]([Cl:21])=[CH:17][CH:16]=2)[N:5]([CH2:11][O:12][CH2:13][CH3:14])[C:6]=1[C:7]([F:10])([F:9])[F:8].[OH-].[K+]>O>[Br:1][C:2]1[C:3]([C:22]([OH:24])=[O:23])=[C:4]([C:15]2[CH:20]=[CH:19][C:18]([Cl:21])=[CH:17][CH:16]=2)[N:5]([CH2:11][O:12][CH2:13][CH3:14])[C:6]=1[C:7]([F:8])([F:10])[F:9]参加物
4
実験手順
A mixture of methyl 4-bromo-2-(p-chlorophenyl)-1-(ethoxymethyl)-5-(trifluoromethyl)pyrrole-3-carboxylate (13.1 g) and potassium hydroxide (3.12 g, 85%, 48 mmol) is stirred at room temperature for 20 hours, stirred at reflux for 2 hours, diluted with water, washed with diethyl ether, acidified to pH 4 with 1N hydrochloric acid and filtered to obtain a solid. The solid is washed with water and petroleum ether and dried to give the title product as a white solid (6.45 g) which is identified by 1H NMR spectral analysis.