NHC-Iridium-Catalyzed Deoxygenative Coupling of Primary Alcohols Producing Alkanes Directly: Synergistic Hydrogenation with Sodium Formate Generated in Situ
作者:Zeye Lu、Qingshu Zheng、Siqi Yang、Chun Qian、Yajing Shen、Tao Tu
DOI:10.1021/acscatal.1c02700
日期:2021.9.3
The direct conversion of alcohols into long-chain alkanes is an attractive but extremely challenging approach for biomass upgrading. Here, we describe the highly selective deoxygenative coupling of aryl ethanols with primary alcohols to produce alkanes, using a bis-N-heterocyclic carbene iridium (bis-NHC-Ir) complex as the catalyst. Up to quantitative yields and selectivity with a broad substrate scope
The long and the short of it: An atom‐economicalroute to α,ω‐diarylalkanes from ω‐arylalkanols was achieved by a direct one‐step method, or a sequential two‐step method depending on the alkyl chain length. The reaction proceeded through the formation of β‐methylhydroxy‐α,ω‐diarylalkanes by dehydrogenation/β‐alkylation, followed by dehydrogenation/decarbonylation.