反应详情

Following the procedure as described in PREPARATION 2B, and making non-critical variations to replace 1-(2-cyclopropylethyl)-1H-indole-2,3-dione with ethyl(4-bromo-2,3-dioxo-2,3-dihydro-1H-indol-1-yl)acetate and 1,3-benzodioxol-5-ol with 3,4-difluorophenol, the title compound was obtained as a white solid (42%); MS (ES+) m/z 424 (M−17), 426 (M−17), 464 (M+23), 466 (M+23).