2-(Trifluoromethyl)aniline → HCID 178427870, compound

Participants

Reaction Conditions

Reaction Steps

To polyphosphoric acid (101 g) heated to 75° C. was added ethyl 2-methyl-4,4,4-trifluoroacetoacetate (10.0 g, 50.5 mmol). 2-Trifluoromethylaniline (6.0 mL, 48.1 mmol) was added dropwise and the reaction mixture heated to 120° C. for 6 h, cooled in ice and treated with water. The cream precipitate was filtered and washed with water and heptane to afford the product (11.4 g, 80%) as a white solid: mp 116.2-116.8° C.; IR νmax (Nujol)/cm−1 3440, 2924, 2854, 1624, 1612, 1584, 1458, 1330, 1226, 1142, 1109; NMR δH (400 MHz, CDCl3) 2.29 (3H, s), 7.47 (1H, t, J 7.6 Hz), 7.98 (1H, d, J 7.6 Hz), 8.60 (1H, d, J 7.4 Hz).

Provenance & Evidence