The tris(acetylacetonato)rhodium(III) catalyst is shown to be a versatile catalyst in the presence of DABCO (1,4‐diazabicyclo[2.2.2]octane) as ligand for the α‐alkylation of ketones followed by transfer hydrogenation, for the one‐pot β‐alkylation of secondary alcohols with primary alcohols and for the alkylation of aromatic amines in the presence of an inorganic base in toluene.
Nickel-Catalyzed Guerbet Type Reaction: C-Alkylation of Secondary Alcohols <i>via</i> Double (de)Hydrogenation
作者:Reshma Babu、Murugan Subaramanian、Siba P. Midya、Ekambaram Balaraman
DOI:10.1021/acs.orglett.1c00782
日期:2021.5.7
Acceptorless double dehydrogenativecross-coupling of secondary and primaryalcohols under nickel catalysis is reported. This Guerbet type reaction provides an atom- and a step-economical method for the C-alkylation of secondaryalcohols under mild, benign conditions. A broad range of substrates including aromatic, cyclic, acyclic, and aliphatic alcohols was well tolerated. Interestingly, the C-alkylation
a reusable catalyst for C-/N-alkylation of alcohols with higher reaction efficiency and selectivity compared to individual components via its flexible binding sites, diverse hydrogen bond donor-acceptor fragments, rigidity, variable coordination mode, and cooperativity.