To develop the utilization of HI as an 'old but new' reagent, we found that the reaction of acetophenone analogues with HI gas proceeded to give an alpha-alkylated product, which is derived from the two ketone molecules. It was possible to conduct the reaction in solvent-free and various organic solvents under anhydrous conditions. From the investigation on the reaction mechanism, we proposed that HI acts as an acid and a reducing agent. (c) 2015 Elsevier Ltd. All rights reserved.
Dehydrogenative Cross-Coupling of Primary and Secondary Alcohols
作者:Sanaa Musa、Lutz Ackermann、Dmitri Gelman
DOI:10.1002/adsc.201300656
日期:2013.10.11
AbstractHomo‐ and cross‐coupling of alcohols resulting in the formation of the corresponding ketones in very good to excellent yield was realized through the one‐pot sequence of dehydrogenation/aldol condensation/hydrogenation accompanied by the release of molecular hydrogen. The dehydrogenation and hydrogenation steps are catalyzed by the previously reported ruthernium‐ and iridium‐based ligand‐metal cooperating catalysts.magnified image