Chiral Dienophiles Derived from Malic Acid: Synthesis of (<i>Z</i>)-(2<i>S</i>)-(<i>tert</i>-Butyl)-5-(ethoxycarbonylmethylene)-1,3-dioxolan-4-one and Its Diels-Alder Reaction with Cyclopentadiene
作者:Georg Kneer、Jochen Mattay、Gerhard Raabe、Carl Krüger、Jürgen Lauterwein
DOI:10.1055/s-1990-26955
日期:——
The synthesis of title chiral olefin 12 is described. Its structure is determined by X-ray analysis. The Diels-Alder reaction of 12 with cyclopentadiene exclusively yields the exo products with a face selectivity up to 95%.
本文描述了标题手性烯烃 12 的合成过程。通过 X 射线分析确定了其结构。12 与环戊二烯的 Diels-Alder 反应只产生外向产物,面选择性高达 95%。