Calcium-Catalyzed Friedel-Crafts Alkylation at Room Temperature
作者:Meike Niggemann、Matthias J. Meel
DOI:10.1002/anie.200907227
日期:2010.5.10
A novel calcium catalyst was found to efficiently functionalize electron‐rich arenes with secondary and tertiary benzylic, propargylic, and allylic alcohols under very mild reaction conditions. The new catalyst system significantly enlarges the scope of the reaction, which was previously limited except for the few examples with secondary benzylicalcohols.
NHC as a Ligand in Heterobimetallic Catalysis: An Insight into a Catalytic Friedel–Crafts-like Reaction
作者:Mukesh Kumar Nayak、Anuradha Mohanty、Sujit Roy
DOI:10.1021/acs.organomet.3c00177
日期:2023.8.14
calculation of local reactivity descriptors, namely, local electron density and the Fukui function index for nucleophilic attack at a center, established that in transition metal–tin heterobimetallic complexes, N-heterocyclic carbene (NHC) is a better ligand than its alkene and phosphine analogues for the coupling of C–H and C–OH bonds. This insight was verified by synthesizing a new complex (NHC)2Pd(Br)(SnCl3)