Hydrazine → 6-Fluoroisoquinoline-3-carbohydrazide

Participants

Reaction Steps

A solution of 6-fluoro-isoquinoline-3-carboxylic acid methyl ester (27 g) and hydrazine (42 g, 10 equiv.) in ethanol (500 mL) was refluxed for 2 h. The reaction mixture was concentrated under high vacuum to remove hydrazine, and the resulting residue was triturated with ethanol (100 mL) to give 6-fluoro-isoquinoline-3-carboxylic acid hydrazide as a light yellow solid (22.8 g, 84%). LRMS (M+H+) m/z 206.1.

Provenance & Evidence