重氮乙酸乙酯 、
(E)-3-Isopropyl-6-methyl-hepta-2,6-dienoic acid methyl ester 在
copper(I) sulfate 作用下,
生成 (1R,2R)-2-{3-[1-Methoxycarbonyl-meth-(E)-ylidene]-4-methyl-pentyl}-2-methyl-cyclopropanecarboxylic acid ethyl ester 、 (1S,2R)-2-{3-[1-Methoxycarbonyl-meth-(E)-ylidene]-4-methyl-pentyl}-2-methyl-cyclopropanecarboxylic acid ethyl ester