Synthesis of β,β-Disubstituted Indanones via the Pd-Catalyzed Tandem Conjugate Addition/Cyclization Reaction of Arylboronic Acids with α,β-Unsaturated Esters
作者:Ang Gao、Xiu-Yan Liu、Hao Li、Chang-Hua Ding、Xue-Long Hou
DOI:10.1021/acs.joc.7b01364
日期:2017.10.6
electron-deficient heterocycle, 2-(4,5-dihydroimidazol-2-yl)pyrimidine (as the ligand), the reaction of α,β-unsaturated esters with arylboronic acids afforded a wide range of 3,3-disubstituted indan-1-ones bearing a quaternary carbon in high yields. Mechanistic studies revealed that the reaction involves a tandem conjugate addition/1,4-Pd shift followed by a cyclization.
在新合成的缺电子杂环2-(4,5-二氢咪唑-2-基)嘧啶(作为配体)催化的Pd催化下,α,β-不饱和酯与芳基硼酸的反应范围很广带有季碳的高产率的,3-二取代的茚满-1-酮。机理研究表明,该反应涉及串联共轭加成/ 1,4-Pd转变,然后环化。