6-甲氧基-2-丙酰萘 、 alkaline earth salt of/the/ methylsulfuric acid 在
bis(ethyl acetoacetato)copper(II) 、 xylene 、
锌 作用下,
生成 (+/-)-2
r-ethyl-2-(6-methoxy-[2]naphthyl)-3
t-methyl-5-oxo-tetrahydro-furan-3
c-carboxylic acid ethyl ester 、
(+/-)-2r-ethyl-2-(6-methoxy-[2]naphthyl)-3c-methyl-5-oxo-tetrahydro-furan-3t-carboxylic acid ethyl ester