Stereoselective Synthesis of (2<i>E</i>,4<i>E</i>)- and (2<i>Z</i>,4<i>E</i>)-2,4-Alkadienoates by the Ester Enolate Claisen Rearrangement of (<i>E</i>)-1-Alkyl-3-trimethylsilyl-2-propenyl Glycolates Followed by the Peterson Reaction
作者:Toshio Sato、Hiroshi Tsunekawa、Hiromasa Kohama、Tamotsu Fujisawa
DOI:10.1246/cl.1986.1553
日期:1986.9.5
The ester enolate Claisen rearrangement of (E)-1-alkyl-3-trimethylsilyl-2-propenyl glycolates gave (E)-erythro-2-hydroxy-3-trimethylsilyl-4-alkenoates with high diastereoselectivity, which were stereoselectively converted into (2E,4E)- and (2Z,4E)-2,4-alkadienoates by the Peterson reaction.
(E)-1-烷基-3-三甲基甲硅烷基-2-丙烯基乙醇酸酯的酯烯醇克莱森重排得到具有高非对映选择性的 (E)-erythro-2-hydroxy-3-trimethylsilyl-4-alkenoates, 其被立体选择性地转化为 (通过 Peterson 反应生成 2E,4E)- 和 (2Z,4E)-2,4- 链二烯酸酯。