作者:Roméric Galéa、Gaëlle Blond
DOI:10.1002/adsc.202200019
日期:2022.4.26
bicyclic acetals, also named furooxepines through a gold(I)-catalyzed domino reaction. During this transformation, two molecules of homopropargyl alcohol react together, in a sequence including an intramolecular hydroalkoxylation, condensation, a 1,6-enyne cycloisomerization, acetalization and an isomerization. This gold(I)-catalyzed domino reaction allow the formation of three bonds, two heterocycles
摘要。我们在此报告了通过金 (I) 催化的多米诺骨牌反应合成 [7,5]-稠合双环缩醛,也称为呋喃西平。在该转化过程中,两个高炔丙醇分子一起反应,顺序包括分子内加氢烷氧基化、缩合、1,6-烯炔环异构化、缩醛化和异构化。这种金 (I) 催化的多米诺骨牌反应允许在一步操作中形成三个键、两个杂环和一个四取代的碳立体中心,具有 100% 的原子经济性。后官能化允许形成四氢呋喃。