3-((4aR,8R,8aS)-8-methoxy-2,2-dimethyl-4,4a,8,8a-tetrahydropyrano[3,2-d][1,3]dioxin-6-yl)propan-1-ol 在
(S)-3,3'-bis(2,4,6-tri-iso-propylphenyl)-1,1'-binaphthyl-2,2'-diyl hydrogenphosphate 作用下,
以
正戊烷 为溶剂,
反应 14.0h,
以42%的产率得到(2R,4a'R,8'R,8a'S)-8'-methoxy-2',2'-dimethylhexahydro-3H,4'H-spiro[furan-2,6'-pyrano[3,2-d][1,3]dioxin]