Donor‐Acceptor Cyclopropanes: Activation Enabled by a Single, Vinylogous Acceptor
作者:Nils L. Ahlburg、Oliver Hergert、Peter G. Jones、Daniel B. Werz
DOI:10.1002/anie.202214390
日期:2023.1.2
A new class of donor-acceptor cyclopropanes bearing only a single, vinylogous acceptor moiety is presented. The system is capable of cycloadditions through Brønsted or Lewis acid catalysis with numerous reagents: aldehydes, ketones, thioketones, nitriles, naphth-2-ols, cyclopropanes, nitrones and isobenzofurans. The mechanism was explored in detail by kinetic and mechanistic experiments.
提出了一类新的供体-受体环丙烷,其仅带有单个插烯受体部分。该系统能够通过布朗斯台德或路易斯酸催化与多种试剂进行环加成:醛、酮、硫酮、腈、萘-2-醇、环丙烷、硝酮和异苯并呋喃。通过动力学和机械实验详细探讨了该机制。