Sequential Pd
<sup>0</sup>
‐ and Pd
<sup>II</sup>
‐Catalyzed Cyclizations: Enantioselective Heck and Nucleopalladation Reactions
作者:Andrew Whyte、Jonathan Bajohr、Ramon Arora、Alexa Torelli、Mark Lautens
DOI:10.1002/anie.202106518
日期:2021.9.6
An enantioselective consecutive cyclization/coupling process, catalyzed by palladium is reported. Stereoinduction arises from an enantioselective carbopalladation, generating an intermediate which promotes a nucleopalladation step. The dual cyclization sequence was compatible with a variety of alkyne-tethered oxygen- and nitrogen-centered nucleophiles, and a variety of alkenyl-tethered aryl iodides
报道了一种由钯催化的对映选择性连续环化/偶联过程。立体诱导源于对映选择性碳钯化,产生促进核钯化步骤的中间体。双环化序列与各种炔烃连接的氧和氮中心亲核试剂以及各种烯基连接的芳基碘化物相容,以良好的产率和高区域选择性和对映选择性锻造许多双杂环。