Non‐Directed Cross‐Dehydrogenative (Hetero)arylation of Allylic C(sp
<sup>3</sup>
)−H bonds enabled by C−H Activation
作者:Andreas Lerchen、Tobias Knecht、Maximilian Koy、Johannes B. Ernst、Klaus Bergander、Constantin G. Daniliuc、Frank Glorius
DOI:10.1002/anie.201807047
日期:2018.11.12
report the selective, non‐directed and cross‐dehydrogenative coupling of allylicC(sp3)−Hbonds with C(sp2)−Hbonds of (hetero)arenes. The methodology employs olefins and (hetero)arenes which are abundantly available chemical feedstocks, and could be applied in late‐stage functionalization reactions of pharmaceuticals. Furthermore, the system exclusively delivers the allylic C−C coupling products highlighting
PdCl2-catalyzed efficient allylation and benzylation of heteroarenes under ligand, base/acid, and additive-free conditions
作者:Feng-Quan Yuan、Lian-Xun Gao、Fu-She Han
DOI:10.1039/c1cc10953g
日期:——
We present a PdCl2-catalyzed protocol for highly efficient allylation and benzylation of a rich variety of N-, O-, and S-containing heteroarenes under base/acid, additive, and ligand-free conditions. The method represents the very few examples for simple, universally applicable, clean, and atom-efficient functionalization of heteroarenes.