Highly Atroposelective Rhodium(II)-Catalyzed N–H Bond Insertion: Access to Axially Chiral <i>N</i>-Arylindolocarbazoles
作者:Qiao Ren、Tingting Cao、Chunnian He、Meihua Yang、Haitao Liu、Lei Wang
DOI:10.1021/acscatal.1c01232
日期:2021.5.21
The highly atroposelective construction of axially chiral N-arylindolocarbazoles is disclosed via the Rh(II)-catalyzed intermolecular carbene N–H insertion reactions. This straightforward transformation provides a rapid access to a wide range of enantio-enriched N-arylindolocarbazole atropisomers bearing the C–N axis in moderate to good yields and high enantioselectivities. Also, the synthetic utility
Rhodium-Catalyzed Ring Expansion Reactions for the Concise Construction of Densely Functionalized Oxathionines and Oxathiocines
作者:Haitao Liu、Feng Chen、Nannan Zhao、Sai V. C. Vummaleti、Michael B. Sullivan、Jackie Y. Ying、Lei Wang
DOI:10.1021/acscatal.2c01529
日期:2022.7.1
Ringexpansionreactions have been proven to be efficient tools for building medium-sized rings with broad applications in synthetic and medicinal chemistry. However, the strategy involving pericyclic or pseudopericyclic pathways via sulfur ylide-initiated [1,4]-sigmatropic rearrangement remains an under-exploited area. Herein, we disclose an interesting ringexpansion of thiochromenes and aromatic