Chemo- and Regioselective C(sp<sup>3</sup>)H Arylation of Unactivated Allylarenes by Deprotonative Cross-Coupling
作者:Nusrah Hussain、Gustavo Frensch、Jiadi Zhang、Patrick J. Walsh
DOI:10.1002/anie.201309084
日期:2014.4.1
Transmetalation of the resulting allyllithium intermediate to LPdAr(Br) and reductive elimination provide the 1,1‐diarylprop‐2‐enes, which are not accessible by the Heck reaction. The regioselectivity in this deprotonative cross‐coupling process is catalyst‐controlled and very high.
Chiral Diarylmethanes via Copper-Catalyzed Asymmetric Allylic Arylation with Organolithium Compounds
作者:Sureshbabu Guduguntla、Valentín Hornillos、Romain Tessier、Martín Fañanás-Mastral、Ben L. Feringa
DOI:10.1021/acs.orglett.5b03396
日期:2016.1.15
A highly enantioselective copper/N-heterocyclic carbene catalyzed allylic arylation with organolithium compounds is presented. The use of commercial or readily prepared aryllithium reagents in the reaction with allyl bromides affords a variety of chiral diarylvinylmethanes, comprising a privileged structural motif in pharmaceuticals, in high yields with good to excellent regio- and enantioselectivities