methyl 2-ethoxy-2-(2-((2-(4-methoxy-4-oxobutyl)-1,3-dioxolan-2-yl)methyl)phenyl)cyclopropanecarboxylate 在
双(乙腈)氯化钯(II) 作用下,
以
丙酮 为溶剂,
生成 methyl 5-ethoxy-8-(4-methoxy-4-oxobutyl)-6,7,8,9-tetrahydro-5H-5,8-epoxybenzo[7]annulene-7-carboxylate 、 methyl 5-ethoxy-8-(4-methoxy-4-oxobutyl)-6,7,8,9-tetrahydro-5H-5,8-epoxybenzo[7]annulene-7-carboxylate