Water → N-(2-chloro-5-nitrophenyl)-3,4-dimethoxybenzamide

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3,4-Dimethoxybenzoyl chloride (2 g) was added to a stirred suspension of 2-chloro-5-nitroaniline (1.72 g) in pyridine (10 ml) at 20° C. The reaction mixture was heated to 100° C. for 1 hour. After cooling to ambient temperature, the reaction mixture was poured into water (100 ml). The resulting precipitate was collected, washed with water and dried. The solid was triturated under methylene chloride (20 ml) to give N-(2-chloro-5-nitrophenyl)-3,4-dimethoxybenzamide (1.2 g), m.p. 231-232° C.; NMR Spectrum: (DMSOd6) 3.82 (s, 6H), 7.08 (d, 1H), 7.62 (m, 1H), 7.82 (d, 1H), 8.08 (m, 1H), 8.54 (d, 1H), 10.07 (m, 1H);

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