β-cyclodextrin-capped palladium nanoparticle-catalyzed ligand-free Suzuki and Heck couplings in low-melting β-cyclodextrin/NMU mixtures
作者:Xiaohua Zhao、Xiang Liu、Ming Lu
DOI:10.1002/aoc.3173
日期:2014.8
Low‐melting β‐cyclodextrin/N‐methylurea (NMU) mixture, an efficient catalytic system for ligand‐free Suzuki and Heck couplings in the presence of fresh native β‐CD‐capped Pd0 nanoparticles, has been successfully reported. This natural and convenient system can be performed in air and could afford the corresponding cross‐coupled products in good to excellent isolated yields after a simple workup under
The catalytic reactions proceed with good yields with a low catalyst loading (1 mol%) under aerobic and CuI-free conditions for Sonogashira and Heck reactions.