ethyl (dimethylsulfuranylidene)acetate 、 (3aR*,4R*)-5,5-dimethyl-4-(2-tetrahydropyranyloxy)ethyl-3a,4,5,6-tetrahydro-2(3H)-pentalenone 以
苯 为溶剂,
反应 12.0h,
以63%的产率得到ethyl 8,8-dimethyl-4-oxo-7-(2-tetrahydropyranyloxy)ethyltricyclo<4.3.0.0>nonan-2-ylcarboxylate