(1S,4S,4'R,5R)-4'-(1-hydroxybut-3-enyl)spiro[bicyclo[2.2.2]oct-2-ene-5,3'-oxolane]-2'-one 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 、
乙烯 作用下,
以79%的产率得到(3aS,6aS,9S,10aR)-9-ethenyl-4-hydroxy-3,3a,4,6a,7,8,9,10-octahydrobenzo[h][2]benzofuran-1-one