Ru-Catalyzed Cross-Dehydrogenative Coupling between Primary Alcohols to Guerbet Alcohol Derivatives: with Relevance for Fragrance Synthesis
作者:Seetharaman Manojveer、Saleh Salahi、Ola F. Wendt、Magnus T. Johnson
DOI:10.1021/acs.joc.8b01558
日期:2018.9.21
A simple method has been developed for the cross dehydrogenative coupling between two different primary alcohols using readily available RuCl2(PPh3)3 as a precatalyst through the borrowing-hydrogen approach. The present methodology is applicable to a large variety of alcohol derivatives including long chain aliphatic alcohols and heteroaryl alcohols. In addition, the methodology was applied in a straightforward
Highly efficient NHC-iridium-catalyzed β-methylation of alcohols with methanol at low catalyst loadings
作者:Zeye Lu、Qingshu Zheng、Guangkuo Zeng、Yunyan Kuang、James H. Clark、Tao Tu
DOI:10.1007/s11426-021-1017-0
日期:2021.8
and secondary alcohols with methanol has been achieved by using bis-N-heterocyclic carbene iridium (bis-NHC-Ir) complexes. Broad substrate scope and up to quantitative yields were achieved at lowcatalystloadings with only hydrogen and water as by-products. The protocol was readily extended to the β-alkylation of alcohols with several primary alcohols. Control experiments, along with DFT calculations
their well-explored propensity to undergo ring-opening reactions with nucleophiles. However, their application as precursors of radical species is still elusive. Herein, we present a bioinspired cobalt-catalysis-based strategy to access unprecedented modes of radical reactivity via oxetane ring-opening. This powerful approach gives access to nucleophilic radicals that engage in reactions with SOMOphiles
First practical cross-alkylation of primary alcohols with a new and recyclable impregnated iridium on magnetite catalyst
作者:Rafael Cano、Miguel Yus、Diego J. Ramón
DOI:10.1039/c2cc33101b
日期:——
A new impregnated iridium on magnetite catalyst has been prepared, characterized, used and recycled, up to ten times with practically the same activity, for the first practical cross-alkylation of primary alcohols. The catalyst showed a wide reaction scope, is easy to prepare and handle, and it could be removed from the reaction medium just by magnetic sequestering.