Synthesis of Spirocyclic Enones by Rhodium-Catalyzed Dearomatizing Oxidative Annulation of 2-Alkenylphenols with Alkynes and Enynes
作者:Szymon Kujawa、Daniel Best、David J. Burns、Hon Wai Lam
DOI:10.1002/chem.201403454
日期:2014.7.7
The dearomatizing oxidative annulation of 2‐alkenylphenols with alkynes and enynes proceeds with high yields and regioselectivities under RhIII catalysis. These reactions are successful using Cu(OAc)2 or air as the stoichiometric oxidant, and provide spirocyclic enones, the basic ring system of which appears in several natural products. Application of this process to the preparation of a highly functionalized
在Rh III催化下,2-炔基苯酚与炔烃和烯炔的脱芳烃氧化环化反应具有很高的收率和区域选择性。这些反应使用Cu(OAc)2或空气作为化学计量的氧化剂成功完成,并提供了螺环烯酮,其基本环系统出现在几种天然产物中。还证明了该方法在制备高度官能化的四环化合物中的应用。