Water → HCID 87141418, compound

Participants

Reaction Steps

A mixture of 1-(4-fluorophenyl)hydrazine hydrochloride (5.0 g, 30.75 mmol), water (20 mL), and acetic acid (20 mL) was added with stirring to a 40% aqueous solution of glyoxal (17.6 mL, 153.8 mmol) over 20 minutes. Stirring was continued for 2 hours and then the mixture was filtered. The precipitate was washed with water and dried to afford 5.0 g (98%) of the desired product. 1H NMR (400 MHz, CDCl3) δ 9.56 (d, 1H), 8.63 (br s, 1H), 7.24 (m, 1H), 7.16 (m, 2H), 7.06 (m, 2H); 19F NMR (376 MHz, CDCl3) δ −120.3. LRMS (ESI pos) m/e 151.1 (M−16).

Provenance & Evidence