(tetrahydropyranyloxy)acetaldehyde 、
4a-carbomethoxy-4,4a,5,6,7,8-hexahydro-5,5-dimethyl-2(3H)-naphthalenone 在
lithium diisopropyl amide 、 zinc(II) chloride 作用下,
以
四氢呋喃 为溶剂,
反应 2.08h,
以90%的产率得到methyl 6-[1-hydroxy-2-(oxan-2-yloxy)ethyl]-4,4-dimethyl-7-oxo-2,3,5,6-tetrahydro-1H-naphthalene-4a-carboxylate