Unexpected lateral-lithiation-induced alkylative ring opening of tetrahydrofurans in deep eutectic solvents: synthesis of functionalised primary alcohols
Unexpected lateral-lithiation-induced alkylative ring opening of tetrahydrofurans in deep eutectic solvents: synthesis of functionalised primary alcohols
作者:Francesca C. Sassone、Filippo M. Perna、Antonio Salomone、Saverio Florio、Vito Capriati
DOI:10.1039/c5cc02884a
日期:——
Functionalised primary alcohols can be obtained by a novel highly regioselective THF ring-opening transformation, which takes place from laterally lithiated intermediates, under air, and in a glycerol-based eutectic mixture.
The regioselective Heck arylation of unsaturated alcohols is utilized as the key step in a convenient one-pot procedure for the production of 2,2-disubstituted tetrahydrofurans and tetrahydropyrans. The arylation reaction is effected with a palladium-diphosphine catalyst alongside a hydrogen bond donor; this is followed by the introduction of a Brønsted acid to the reaction mixture, affording the oxygen heterocycles in moderate yields.