Multiheterocyclic Motifs via Three-Component Reactions of Benzynes, Cyclic Amines, and Protic Nucleophiles
作者:Sean P. Ross、Thomas R. Hoye
DOI:10.1021/acs.orglett.7b03458
日期:2018.1.5
general, three-component reaction strategy for the construction of compounds containing multiple heterocycles is described. Thermal benzyne formation (by the hexadehydro-Diels–Alder (HDDA) reaction) in the presence of tertiary cyclic amines and a protic nucleophile (HNu) gives, via ring-opening of intermediate ammonium ion/Nu– ion pairs, heterocyclic products. Many reactions are efficient even when
描述了用于构建含有多个杂环的化合物的广泛通用的三组分反应策略。在叔环胺和质子亲核试剂 (HNu) 存在下,热苯炔形成(通过十六氢狄尔斯-阿尔德 (HDDA) 反应)通过中间铵离子/ Nu离子对的开环产生杂环产物。即使三种反应物的化学计量负载接近统一,许多反应也是有效的。使用 HOSO 2 CF 3作为 HNu 得到三氟甲磺酸铵中间体,然后可以通过更广泛的亲核试剂开环。