Water opens the door to organolithiums and Grignard reagents: exploring and comparing the reactivity of highly polar organometallic compounds in unconventional reaction media towards the synthesis of tetrahydrofurans
作者:Luciana Cicco、Stefania Sblendorio、Rosmara Mansueto、Filippo M. Perna、Antonio Salomone、Saverio Florio、Vito Capriati
DOI:10.1039/c5sc03436a
日期:——
employment of both anhydrous conditions and water-free reaction media is required for the successful handling of organometallic compounds with highly polarised metal–carbon bonds. Herein, we describe how, under heterogeneous conditions, Grignard and organolithiumreagents can smoothly undergo nucleophilic additions to γ-chloroketones, on the way to 2,2-disubstituted tetrahydrofurans, “on water”, competitively
Regioselective desymmetrization of diaryltetrahydrofurans via directed ortho-lithiation: an unexpected help from green chemistry
作者:Valentina Mallardo、Ruggiero Rizzi、Francesca C. Sassone、Rosmara Mansueto、Filippo M. Perna、Antonio Salomone、Vito Capriati
DOI:10.1039/c4cc03149k
日期:——
ortho-Lithiation/functionalization of diaryltetrahydrofurans proceeds well with t-BuLi both in Et2O and cyclopentyl methyl ether and, remarkably, also in protic eutectic mixtures.