Functionalized β-cyclodextrin as supramolecular ligand and their Pd(OAc)2 complex: highly efficient and reusable catalyst for Mizoroki–Heck cross-coupling reactions in aqueous medium
作者:Someshwar D. Dindulkar、Daham Jeong、Hwanhee Kim、Seunho Jung
DOI:10.1016/j.carres.2016.04.024
日期:2016.7
supramolecular platform for phosphine-free Mizoroki-Heck cross-coupling reactions in water. The efficient arylation of alkenes was carried out using different iodo- and bromo-arenes with good to excellent yields (up to 96%). The advantages, like recyclability of catalysts, operational simplicity and accessibility in aqueousmedium, make this protocol eco-friendly.
palladium nanoparticles Pd-1 on fluorous silicagel (FSG) and their utilization in the Heck reaction have been investigated. High yields of vinylic substitution products have been obtained. Recycling studies have shown that the solid-supported palladium catalyst can be readily recovered and reused several times without significant loss of activity. Reactions and recovery of the solid-supported palladium
Remote and Proximal Hydroaminoalkylation of Alkenes Enabled by Photoredox/Nickel Dual Catalysis
作者:Songlin Zheng、Wenlong Wang、Weiming Yuan
DOI:10.1021/jacs.2c08039
日期:2022.10.5
hydroaminoalkylation of activated alkenes that provides the β-selective products. The chain-walking of a Ni–H intermediate toward a carbonyl allows for the hydroaminoalkylation of unactivated alkenes at remote sp3 C–H sites. This method tolerates a broad substrate scope of both amines and alkenes as well as providing a streamlined synthesis of value-added β-amino acid derivatives from readily available