Water → Isopropyl 2-chloro-5-[(2-methoxybenzoyl)amino]benzoate

Beteiligte Stoffe

Reaktionsschritte

2-Methoxybenzoyl chloride (8.8 g, 0.05 mole) was added at room temperature under a dry nitrogen atmosphere to a stirred mixture of 1-methylethyl 5-amino-2-chlorobenzoate (10.7 g, 0.05 mole), triethylamine (5.6 g, 0.055 mole) and 4-(N,N,-dimethylamino)pyridine (catalyst, 0.2 g) dissolved in dry p-dioxane (100 ml). A solid precipitate formed. Following the initial exothermic reaction (temperature increased to about 45° C.), the reaction mixture was stirred under nitrogen at room temperature for 20 hours. Next, the reaction mixture was added to water (500 ml), resulting in the precipitation of a solid product, which was collected by vacuum filtration, washed with water (500 ml), and dried to yield 16.2 g of the title compound, m.p. 94°-96° C.

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