Hydrazine hydrate (1:1) → 2-Naphthohydrazide

Participants

Reaction Steps

To a solution of 2-naphthyl carboxylic acid ethyl ester (2.0 g, 9.99 mmol) in absolute ethanol (30 ml) was added hydrazine hydrate (4.85 ml, 99.9 mmol) and the reaction mixture was heated at reflux temperature for 72 h. The reaction mixture was cooled and the precipitate was filtered off, washed with 96% ethanol (2×10 ml) and diethyl ether (3×10 ml), dried in vacuo at 50° C. which afforded 0.9 g (48%) of naphthalene-2-carboxylic acid hydrazide as a solid.

Provenance & Evidence