2-Fluoroaniline → N-(2-Fluorophenyl) cinnamamide

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-fluoroaniline (25.0 g, 225 mmol) and potassium carbonate (47 g, 337 mmol) in water (112 mL) and acetone (45 mL) at 0° C. was added cinnamoyl chloride (37.0 g, 225 mmol, 1 eq) in acetone (45 mL) over 2 h. The reaction was stirred for 1 h at 0° C., and quenched into 200 mL of ice-water. The white crystalline solid was filtered and washed with water. The solid was air dried for 2 h, then washed with 400 mL of hexanes. The solid was dried under vacuum overnight to afford N-(2-fluorophenyl)cinnamamide (56 g, 103% yield). 1H NMR (400 MHz, CDCl3) δ ppm 8.49 (br t, J=7.8 Hz, 1H), 7.80 (d, J=15.3 Hz, 1H), 7.57 (m, 3H), 7.41 (m, 3H), 7.17 (m, 3H), 6.61 (d, J=15.6 Hz, 1H). Mass Spectrum (ESI) m/e=242.1 (M+1).

Provenance & Evidence