Aniline → HCID 11000106, compound

Participants

Reaction Steps

A solution of 2-(N-Bromoacetylamino)benzoic acid from Example 79 (5.0 g, 19.37 mmol), aniline (4.51 g, 4.41 mL, 48.4 mmol) and anhyd DMF (50 mL) was heated in an oil bath at 85° C. for 4.5 h. The reaction mixture was cooled and poured into ice-water (500 mL). A solution of 50 KOH (100 mL) was added to dissolve the milky white suspension and the resulting homogenous solution was extracted with CH2Cl2 (200 mL, 2×100 mL). The combined CH2Cl2 extract was set aside and the aqueous layer was acidified to pH=3 (pH meter) with 5% HBr. The resulting precipitate was washed with 5% HBr solution and water, and then dried in a vacuum oven at 50° C. for 2 days, yielding 4.74 g (90.6%) of a white powder, mp 192.4-192.8° C. (sealed tube); 1H NMR (DMSO-d6) δ 13.41 (bs, 1H), 12.01 (s, 1H), 8.72 (d, J=8.4, 1H), 7.93 (dd, J=7.6, J=1.6, 1H), 7.59 (dt, J=8.8, J=1.6, 1H), 7.15-7.05 (m, 3H), 6.63-6.45 (m, 4H); 3.83 (s, 2H); 13C NMR (DMSO-d6) δ 170.85, 169.01, 148.11, 140.56, 134.13, 131.10, 128.94, 122.63, 119.38, 117.10, 115.96, 112.40, 48.93; MS (EI, m/z) 270.1 (M+)

Provenance & Evidence