(+/-)-(1R*,4S*,7S*)-7-<(R*)-1,2-butadienyl>-1-methylbicyclo<2.2.1>hept-2-ene 生成 (+/-)-(Z)-cis-1-ethylidene-3a,4,5,7a-tetrahydro-6-methylindene 、 (+/-)-(E)-cis-1-ethylidene-3a,4,5,7a-tetrahydro-6-methylindene 、 (+/-)-(Z)-cis-1-ethylidene-3a,4,5,7a-tetrahydro-3a-methylindene 、 (+/-)-(E)-cis-1-ethylidene-3a,4,5,7a-tetrahydro-3a-methylindene