Cyclopropanation of Ketene Silyl Acetals with Allylic Acetates Using η<sup>3</sup>-Allylpalladium-Pyridinylimidazole Catalysts
作者:Akiharu Satake、Hiroyuki Koshino、Tadashi Nakata
DOI:10.1246/cl.1999.49
日期:1999.1
Highly selective cyclopropanation of ketene silyl acetals with allylic acetates was carried out in the presence of novel η3-allylpalladium-pyridinylimidazole complexes and sodium acetate in DMSO at room temperature. When cinnamyl acetate was used as an allylic acetate, phenylcyclopropane derivative was obtained stereoselectively in 83% yield.
在新型 η3-烯丙基
钯-
吡啶基
咪唑配合物和
乙酸钠的存在下,在室温下,在
DMSO 中进行烯酮甲
硅烷基
缩醛与烯丙
乙酸酯的高选择性
环丙烷化反应。当
乙酸肉桂酯用作
乙酸烯丙酯时,苯基
环丙烷衍
生物以83%的收率立体选择性地获得。