3-(1,3-Dihydro-6-methoxy-7-methyl-3-oxo-4-p-toluenesulfonyloxy-5-isobenzofuranylmethyl)-2-methylcyclopent-2-en-1-ol 、 、 3-(1,3-Dihydro-6-methoxy-7-methyl-3-oxo-4-p-toluenesulfonyloxy-5-isobenzofuranylmethyl)-2-methyl-1-vinyloxycyclopent-2-ene 、 lithium perchlorate 在
silica 、 Brine 、
magnesium sulfate 、 hexanes ethyl acetate 作用下,
以
乙烯基乙醚 、
乙醚 、
碳酸氢钠 为溶剂,
反应 30.5h,
以The product 3-(1,3-dihydro-6-methoxy-7-methyl-3-oxo-4-p-toluenesulfonyloxy-5-isobenzofuranylmethyl)-2-methylcyclopent-2-en-1-ylacetaldehyde (0.050 g) was finally obtained after chromatography (hexanes/ethyl acetate, 2/1)的产率得到3-(1,3-dihydro-6-methoxy-7-methyl-3-oxo-4-p-toluenesulfonyloxy-5-isobenzofuranylmethyl)-2-methylcyclopent-2-en-1-ylacetaldehyde