(E)-4-Chloro-3-(3-methoxy-benzoyl)-but-3-enoic acid ethyl ester 、 ethyl 2-[10-(2-ethoxy-2-oxoethyl)-6,15-dimethoxy-9,18-dioxo-1-pentacyclo[9.7.0.02,10.03,8.012,17]octadeca-3(8),4,6,12(17),13,15-hexaenyl]acetate 、
三氯化铝 生成
(1-Chloro-5-methoxy-3-oxo-indan-2-yl)-acetic acid ethyl ester