2-(3-Nitropyridin-4-yl)ethanol → 4-Pyridineethanol, 3-amino-

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A solution of 2-(3-nitropyridin-4-yl)ethanol (24) (WO 2006136562) (2.00 g, 11.89 mmol) in MeOH (150 mL) was passed through a Thales H-cube (2.0 mL·min−1, 30° C., 30 bar, Pd/C Cat-Cart, 55 mm, controlled mode). Analysis by LC-MS showed a significant amount of starting material was still present and the solution was passed through the H-cube twice more (2.0 mL·min−1, full hydrogen mode, RT, and 2.0 mL·min−1, full hydrogen mode, 40° C.). Evaporation of the volatiles gave the title compound (25) as a purple oil (1.30 g, 81%): m/z 139 (M+H)+ (ES+).

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