2-((3E,9E,11Z)-13-Chloro-8-methoxy-3-methyl-trideca-3,9,11-trienyl)-malonic acid dimethyl ester 在
caesium carbonate 作用下,
以
乙腈 为溶剂,
反应 5.0h,
生成 (4aR,4bR,8S,8aR,10aR)-8-Methoxy-4a-methyl-3,4,4a,4b,5,6,7,8,8a,10a-decahydro-1H-phenanthrene-2,2-dicarboxylic acid dimethyl ester