A Gold(I)-Catalyzed Oxidative Rearrangement of Heterocycle-Derived 1,3-Enynes Provides an Efficient and Selective Route to Divinyl Ketones
作者:Stefano Nejrotti、Gabriele Prina Cerai、Alberto Oppedisano、Andrea Maranzana、Ernesto G. Occhiato、Dina Scarpi、Annamaria Deagostino、Cristina Prandi
DOI:10.1002/ejoc.201701212
日期:2017.11.9
The gold-catalyzed oxidation of N-tosyl-protected 6-alkynyl-3,4-dihydro-2H-pyridines was studied in detail to obtain divinyl ketones in which one of the double bond is embedded in a heterocyclic framework. The best reaction conditions were then extended to different types of substrates to assess the scope of the reaction. DFT calculations were exploited to gain insight into the regioselectivity and
详细研究了 N-甲苯磺酰基保护的 6-炔基-3,4-二氢-2H-吡啶的金催化氧化,以获得其中一个双键嵌入杂环骨架的二乙烯基酮。然后将最佳反应条件扩展到不同类型的底物以评估反应范围。DFT 计算也被用来深入了解该过程的区域选择性和化学选择性。然后根据 Nazarov 方法将获得的二乙烯基酮轻松环化,并将双环或多环化合物用作合成植物激素类似物独脚金内酯的支架