作者:Athelstan L. J. Beckwith、Tony Lawrence、Algirdas K. Serelis
DOI:10.1039/c39800000484
日期:——
1,5-Ring closure of 1- or 3-substituted hex-5-enyl radicals affords mainly cis-disubstituted cyclic products, whereas 2- or 4-substituted species give mainly trans-products; the significance of this stereoselectivity is demonstrated in the formation of the norbornane system from acyclic precursors.
1-或3-取代的六-5-烯基的1,5-环闭合主要提供顺式-二取代的环状产物,而2-或4-取代的物质主要提供反式产物。这种立体选择性的重要性在由无环前体形成降冰片烷体系中得到了证明。