反应详情

Following the procedure as described in PREPARATION 26A and making non-critical variations using 4,6-dimethoxy-1H-indole-2,3-dione to replace 2,3-dihydro-6H-[1,4]dioxino[2,3-f]indole-7,8-dione, and bromodiphenylmethane to replace 2-(bromomethyl)-5-(trifluoromethyl)furan, 1-(diphenylmethyl)-4,6-dimethoxy-1H-indole-2,3-dione was obtained (90%): 1H NMR (300 MHz, DMSO-d6) δ7.49-7.19 (m, 10H), 6.72 (s, 1H), 6.21 (d, J=1.5 Hz, 1H), 5.87 (d, J=1.5 Hz, 1H), 3.86 (s, 3H), 3.70 (s, 3H).