反应详情

Following the procedure as described in EXAMPLE 12 and making non-critical variations using 3-fluoro-2-methylaniline to replace cyclohexanemethylamine, and 2-[(2′-oxo-5,6-dihydrospiro[benzo[1,2-b:5,4-b′]difuran-3,3′-indol]-1′(2′H)-yl)methyl]benzoic acid to replace 3-[(2′-oxo-5,6-dihydrospiro[benzo[1,2-b:5,4-b′]difuran-3,3′-indol]-1′(2′H)-yl)methyl]benzoic acid, N-(3-fluoro-2-methylphenyl)-2-[(2′-oxo-5,6-dihydrospiro[benzo[1,2-b:5,4-b′]difuran-3,3′-indol]-1′(2′H)-yl)methyl]benzamide was obtained (84%) as a colorless solid: mp>230° C.; 1H NMR (300 MHz, DMSO-d6) δ 10.23 (s, 1H), 7.68 (d, J=6.6 Hz, 1H), 7.51-7.37 (m, 2H), 7.33-7.13 (m, 5H), 7.11-6.97 (m, 2H), 6.89 (d, J=7.8 Hz, 1H), 6.58 (s, 1H), 6.39 (s, 1H), 5.16-5.02 (m, 2H), 4.85 (d, J=9.4 Hz, 1H), 4.70 (d, J=9.4 Hz, 1H), 4.47 (t, J=8.8 Hz, 2H), 2.93 (t, J=8.8 Hz, 1H), 2.21-2.14 (m, 3H); 13C NMR (75 MHz, DMSO-d6) δ177.8, 167.8, 162.8, 161.6, 161.2, 159.6, 142.8, 138.3, 138.2, 136.1, 134.6, 132.7, 131.0, 129.1, 128.5, 127.9, 127.1, 127.0, 126.9, 124.2, 123.6, 122.7, 121.1, 126.9, 120.3, 119.6, 113.0, 112.7, 109.7, 92.9, 80.4, 72.6, 65.4, 57.4, 41.4, 28.8, 15.6, 10.4, 10.3; MS (ES+) m/z 543.1 (M+23).