Stannous chloride dihydrate → 3-(3-Hydrazinophenyl)propionic acid ethyl ester

Participants

Reaction Steps

To a solution of 3-(3-aminophenyl)propionic acid ethyl ester (14 g, 72.5 mmol) in conc. HCl (200 mL) was added aqueous (10 mL) of NaNO2 (5 g, 72.5 mmol) at 0° C. and the resulting mixture was stirred for 1 h. A solution of SnCl2.2H2O (33 g, 145 mmol) in conc. HCl (150 mL) was then added at 0° C. The reaction solution was stirred for an additional 2 h at RT. The precipitate was filtered and washed with ethanol and ether to yield 3-(3-hydrazinophenyl)propionic acid ethyl ester as a white solid, which was used for the next reaction without further purification. MS (ESI): m/z: 209 (M+H+).

Provenance & Evidence