(E)-{5-oxo-2-[(phenylmethoxy)methyl]-4-(3-phenylpropylidene)-2,3-dihydrofur-2-yl}methyl 4-methyl-3-(methylethyl)pentanoate 在
三氯化硼 作用下,
以
二氯甲烷 为溶剂,
以68%的产率得到3-Isopropyl-4-methyl-pentanoic acid 2-hydroxymethyl-5-oxo-4-[3-phenyl-prop-(E)-ylidene]-tetrahydro-furan-2-ylmethyl ester