Rhodium(III)-Catalyzed C–H Activation: A Cascade Approach for the Regioselective Synthesis of Fused Heterocyclic Lactone Scaffolds
作者:Anil Kumar、Kandikere Ramaiah Prabhu
DOI:10.1021/acs.joc.9b03266
日期:2020.3.6
A Rh(III)-catalyzed cascade C-H activation; regioselective [4 + 2] oxidative annulation; and lactonization of aromatic acids, anhydrides, and acrylic acid derivatives with 4-hydroxy-2-alkynoates have been disclosed. This strategy leads to fused heterocyclic lactone scaffolds in a single step with moderate functional group tolerance and excellent site selectivity. Besides, in one step, an antipode of
Rh(III)催化的级联CH活化;区域选择性[4 + 2]氧化环化;已经公开了芳族酸,酸酐和丙烯酸衍生物与4-羟基-2-链烷酸酯的内酯化反应。这种策略可以一步合成具有稠合的杂环内酯支架,具有中等的官能团耐受性和出色的位点选择性。此外,一步合成了含有三环异香豆素骨架的头孢菌中间体天然产物的对映体。