(3R,7R,8S,8aR)-7,8-diallyl-6-(methoxycarbonyl)-5-oxo-3-phenyl-2,3,6,7,8,8a-hexahydro-5H-oxazolo[3,2-a]pyridine 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) lithium hexamethyldisilazane 作用下,
以
四氢呋喃 、
二氯甲烷 为溶剂,
反应 2.0h,
生成 (3R,6R,6aR,10aS,10bR)-6-(2-[1,3]Dioxolan-2-yl-ethyl)-5-oxo-3-phenyl-2,3,6,6a,7,10,10a,10b-octahydro-5H-oxazolo[2,3-a]isoquinoline-6-carboxylic acid methyl ester