Photochemistry of alkylated 4,4-dimethoxy-2,5-cyclohexadienones in methanol. Synthesis of methyl ester of (±)-desepoxy-2,5-didehydromethylenomycin A
作者:Fang-Tsao Hong、Kung-Shing Lee、Chun-Chen Liao
DOI:10.1016/0040-4039(92)88165-2
日期:1992.4
Alkylated 4,4-dimethoxy-2,5-cyclohexadienones were irradiated in methanol to give 2-cyclopentenones derivatives in fair yields. Methyl ester of (±)-desepoxy-2,5-didehydromethylenomycin A was prepared from 2,3-dimethylhydroquinone monomethyl ether in four steps and 36% overall yield using this photochemical reaction as a key step.