通过分子内1,3-偶极环偶氮甲亚胺与Baylis-Hillman加成物作为双极亲和剂的单锅反应,可以轻松完成一系列萘[2,1- b ]吡喃并吡咯并核苷和吲哚并idine的轻松合成。该协议适用于多种光致变色和具有生物活性的萘并吡喃产品。通过一些产物的X射线晶体学研究确定了环加成反应的区域和立体化学结果。
通过分子内1,3-偶极环偶氮甲亚胺与Baylis-Hillman加成物作为双极亲和剂的单锅反应,可以轻松完成一系列萘[2,1- b ]吡喃并吡咯并核苷和吲哚并idine的轻松合成。该协议适用于多种光致变色和具有生物活性的萘并吡喃产品。通过一些产物的X射线晶体学研究确定了环加成反应的区域和立体化学结果。
Rhodium-Catalyzed Diastereoselective [3 + 2] Cycloaddition of Carbonyl Ylide: An Access to the Core Ring System of Cordigol and Lophirone H
作者:Manickam Bakthadoss、Vishal Agarwal
DOI:10.1021/acs.joc.0c02073
日期:2020.12.4
synthetic strategy for the construction of tricyclic chromeno/quinolino furan frameworks via creation of two new rings and three contiguous stereogenic centers with high diastereoselectivity through a rhodium-catalyzed intramolecular carbonyl ylide cycloaddition reaction for the first time. This protocol allows the synthesis of the core ring system of natural products such as cordigol and lophirone H.