Ammonium Chloride → 3-Chloro-4-(2-pyridylmethoxy)aniline

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To a solution of 2-[(2-chloro-4-nitrophenoxy)methyl]pyridine from Example 5A (6.65 g, 25.1 mmol) in ethanol (120 mL) was added zinc powder (8.22 g, 126 mmol), and the mixture was heated to 60° C. A solution of ammonium chloride (2.67 g, 50.3 mmol) in water (24 mL) was added dropwise, and the reaction was stirred for additional 2 h at this temperature. The mixture was filtered through Celite®, and the solvent was removed in vacuo. The residue was triturated with water, and the precipitate was collected by suction filtration, washed with water and dried to yield 4.97 g (84%) of the aniline.

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