(E)-2-Methyl-3-oxo-9-phenyl-non-6-enoic acid ethyl ester 在
copper diacetate 、 manganese triacetate 作用下,
生成 (1S,5S)-1-Methyl-2-oxo-5-((E)-3-phenyl-propenyl)-cyclopentanecarboxylic acid ethyl ester 、 (1S,5R)-1-Methyl-2-oxo-5-((E)-3-phenyl-propenyl)-cyclopentanecarboxylic acid ethyl ester