Recent advances in the assembly of dehydrobenzoannulenes (DBAs) are the subject of this account. Using in situ generated acetylenic intermediates, novel α,ω-polyynes can be easily constructed using Pd-catalyzed alkynylation methodology. Subsequent cyclization via intra- and intermolecular Cu-mediated reactions can provide a wide variety of DBAs, including heretofore inaccessible topologies, systems
脱氢苯甲环烯 (
DBA) 组装的最新进展是本报告的主题。使用原位生成的炔中间体,可以使用 Pd 催化的炔基化方法轻松构建新型 α,ω-聚炔。随后通过分子内和分子间 Cu 介导的反应进行的环化可以提供各种各样的
DBA,包括迄今为止无法获得的拓扑结构、具有前所未有数量的炔键的系统、具有衍生芳环的结构和不寻常的有机
金属物种。