2,5-Dimethoxytetrahydrofuran → 2-Chloro-4-(1-pyrrolyl)benzoic acid methyl ester

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Reaktionsschritte

2.0 g of methyl 4-amino-2-chlorobenzoate were dissolved in 10 ml of acetic acid, 2.0 ml of 2,5-dimethoxytetrahydrofuran were added thereto, and the mixture was heated under reflux for 15 minutes. After cooling the reaction solution, the solvent was evaporated. The obtained residue was mixed with EtOAc and saturated NaHCO3 aq. and extracted. The organic layer was washed with brine, and dried over sodium sulfate anhydride. After evaporating the solvent, the residue was purified by silica gel column chromatography (hexane-EtOAc (4:1)) to obtain 2.1 g of methyl 2-chloro-4-(1H-pyrrol-1-yl)benzoate.

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