描述:
5-[7a-(tert-Butyl-dimethyl-silanyloxy)-2-methylene-1,2,3,4,7,7a-hexahydro-4,7-methano-inden-3a-yl]-4-methyl-3,5-dioxo-pentanoic acid methyl ester 反应 -5.0h,
以99%的产率得到5-[2-(tert-Butyl-dimethyl-silanyloxymethyl)-4-methylene-cyclopent-1-enyl]-4-methyl-3,5-dioxo-pentanoic acid methyl ester