Directed Magnesiation of Polyhaloaromatics using the Tetramethylpiperidylmagnesium Reagents TMP<sub>2</sub>Mg⋅2 LiCl and TMPMgCl⋅LiCl
作者:Andreas Unsinn、Christoph J. Rohbogner、Paul Knochel
DOI:10.1002/adsc.201300185
日期:2013.5.17
A convenient and efficient functionalization of polyhaloaromatics via regioselective magnesiation has been developed. Starting from simple, inexpensive but structurally challenging arenes, metallation by magnesium amide bases was achieved under mild conditions. The desired Grignardreagents were stable towards aryne formation, were obtained in good yields within short reaction times and could be reacted