Zr-Catalyzed Electrophilic Carbomagnesation of Aryl Olefins. Mechanism-Based Control of Zr−Mg Ligand Exchange
作者:Judith de Armas、Amir H. Hoveyda
DOI:10.1021/ol0160607
日期:2001.6.1
Zr-catalyzed carbomagnesations are disclosed, where in contrast to previous catalytic carbomagnesations the alkyl moiety of the electrophile is transferred (vs that of the Grignardreagent). The identity of the Grignardreagent is manipulated so that Zr-Mg exchange is facilitated, leading to the formation of alkylmagnesium halide products.
An Intramolecular Iodine‐Catalyzed C(sp
<sup>3</sup>
)−H Oxidation as a Versatile Tool for the Synthesis of Tetrahydrofurans
作者:Vanessa Koch、Stefan Bräse
DOI:10.1002/ejoc.202100652
日期:2021.6.25
The first iodine-catalyzed cyclization reaction of aliphatic primary and secondary alcohols gives access to tetrahydrofurans through an intramolecular C(sp3)−H activation. The reaction proceeds under mild reactions using either a floodlight lamp or daylight.