Inside-outside stereoisomerism. 5. Synthesis and reactivity of trans-bicyclo[n.3.1] alkanones prepared via the intramolecular photocycloaddition of dioxenones
作者:Jeffrey D. Winkler、Bor Cherng Hong、John P. Hey、Paul G. Williard
DOI:10.1021/ja00023a037
日期:1991.11
formation of trans-fused photoadducts is observed in almost all cases, which upon fragmentation lead to the synthesis of bicycloalkanones with an 'inside-outside" or trans intrabridgehead stereochemical relationship. This methodology has been applied to the synthesis of several 'inside-outside" bicycloalkanones that cannot otherwise be prepared. The unusual reactivity of both the dioxanone photoadducts
已经研究了一系列双环二恶酮的分子内光环加成的立体选择性。几乎在所有情况下都可以观察到选择性形成反式融合的光加合物,其碎片化导致双环烷酮的合成具有“内外”或反式桥头立体化学关系。这种方法已应用于几种“内部”的合成。外”不能以其他方式制备的双环烷酮。描述了二恶烷酮光加合物和双环烷酮碎片产物的不寻常反应性。