Efficient Formation of Benzylic Quaternary Centers via Palladium Catalysis
作者:Aditya L. Gottumukkala、Jasmin Suljagic、Kiran Matcha、Johannes G. de Vries、Adriaan J. Minnaard
DOI:10.1002/cssc.201300276
日期:2013.9
Four′s a crowd: An efficient protocol for the formation of benzylicquaternarycentersvia arylation of enones using a catalyst made from Pd(O2CCF3)2 and 2,2′‐bipyridine is developed. For cyclic substrates, catalyst loadings as low as 1 mol % Pd are enough to afford excellent yields (>90 %) using a variety of arylboronic acids. In case of acyclic substrates, the addition of KSbF6 was found to improve