Switchable β-alkylation of Secondary Alcohols with Primary Alcohols by a Well-Defined Cobalt Catalyst
作者:Bedraj Pandey、Shi Xu、Keying Ding
DOI:10.1021/acs.organomet.1c00147
日期:2021.5.10
β-alkylation of secondaryalcohols with primaryalcohols to selectively generate alcohols by a well-defined Co catalyst is presented. Remarkably, a low catalyst loading of 0.7 mol % can be employed for the reaction. More significantly, this study represents the first Co-catalyzed switchable alcohol/ketone synthesis by simply manipulating the reaction parameters. In addition, the transformation is environmentally
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 simple base, KOH-catalyzed cross-coupling of primary and secondaryalcohols is reported in which the primaryalcohols play the role of alkylation reagents. EPR and mechanistic studies confirmed the involvement of radical and ketone intermediates formed from primary and secondaryalcohols, respectively, leading to the formation of β-alkylated secondaryalcohols. Graphical abstract A simple base-catalyzed