2-氟-2-磷酰基乙酸三乙酯 、
正丁基锂 、
(3E, 5E)-5-Fluoro-6-(5,5,8,8-tetramethyl-3-propoxy-5,6,7,8-tetrahydro-naphthalen-2-yl)-hepta-3,5-dien-2-one 在
2-E 、 silica gel 作用下,
以
四氢呋喃 为溶剂,
反应 16.0h,
以the title compound and its 2-E isomer were obtained by flash column chromatography on silica gel (3% EtOAc-hexane) as a ˜1.4:1 mixture (222 mg)的产率得到(2Z,4E,6E)-2,6-difluoro-3-methyl-7-(5,5,8,8-tetramethyl-3-propoxy-5,6,7,8-tetrahydro-naphthalen-2-yl)-octa-2,4,6-trienoic acid ethyl ester