3-O-but-3-ynyl 2-O-prop-2-enyl (2R,3R,5R,6R)-5,6-dimethoxy-5,6-dimethyl-1,4-dioxane-2,3-dicarboxylate 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 作用下,
以
二氯甲烷 为溶剂,
反应 3.0h,
生成 (1R,5Z,12R,14R,15R)-14,15-dimethoxy-14,15-dimethyl-7-methylidene-3,10,13,16-tetraoxabicyclo[10.4.0]hexadec-5-ene-2,11-dione 、 (1R,5E,12R,14R,15R)-14,15-dimethoxy-14,15-dimethyl-7-methylidene-3,10,13,16-tetraoxabicyclo[10.4.0]hexadec-5-ene-2,11-dione