7-Norbornenones of exo,exo-disubstituted patterns were formed highly selectively in good yields from Lewis acid-promoted tandem intermolecular Diels-Alder/intramolecular allylation reactions. The intermolecular Diels-Alder reaction between 1,4-bis(trimethylsilyl)-1,3-butadienes or 1-trimethylsilyl-1,3-butadienes with maleic anhydride in the presence of newly sublimed AlCl3 afforded their corresponding cycloaddition
由
路易斯酸促进的串联分子间Diels-Alder /分子内烯丙基化反应以高产率高选择性地形成了exo,exo-di取代的模式的7-Norbornenones。在新升华的
AlCl3存在下,1,4-双(三甲基甲
硅烷基)-
1,3-丁二烯或1-三甲基甲
硅烷基-
1,3-丁二烯与
马来酸酐的分子间Diels-Alder反应提供了它们相应的环加成产物,并对其进行了 原位产生的烯丙基
硅烷部分介导羰基的分子内烯丙基化,提供了exo,exo-di取代的模式的7-
降冰片烯酮。