methyl 1-(furan-2-carbonyl)-2-(4-methoxyphenyl)cyclopropanecarboxylate 在
indium(III) triflate 作用下,
以
1,2-二氯乙烷 为溶剂,
反应 6.0h,
生成 methyl 4-(4-methoxyphenyl)-7-oxo-4,5,6,7-tetrahydrobenzofuran-6-carboxylate 、 methyl 4-(4-methoxyphenyl)-7-oxo-4,5,6,7-tetrahydrobenzofuran-6-carboxylate