Organocatalytic Atroposelective Synthesis of N−N Axially Chiral Indoles and Pyrroles by De Novo Ring Formation
作者:Ke‐Wei Chen、Zhi‐Han Chen、Shuang Yang、Shu‐Fang Wu、Yu‐Chen Zhang、Feng Shi
DOI:10.1002/anie.202116829
日期:2022.4.19
The first highly atroposelective construction of N−N axially chiral indole scaffolds was established via a new strategy of denovo ring formation, which is also applicable for the synthesis of N−N axially chiral bispyrroles. Such N−N axially chiral heterocycles can be converted into chiral organocatalysts. They may also display potent anticancer activity, thus offering new members of the N−N atropisomer
Enantioselective Synthesis of N–N Amide–Pyrrole Atropisomers via Paal–Knorr Reaction
作者:Yuanlin Wei、Fan Sun、Guofeng Li、ShiYu Xu、Ming Zhang、Liang Hong
DOI:10.1021/acs.orglett.3c03280
日期:2024.3.29
we present a highly efficient enantioselective synthesis of monoheteroaryl N–N atropisomers via an asymmetric Paal–Knorr reaction, affording a diverse array of N–N amide–pyrrole atropisomers with excellent enantioselectivities. Gram-scale synthesis and post-transformations of the product demonstrated the synthesis utility of this method. Racemization experiments confirmed the configurational stability
Synthesis of N–N Axially Chiral Pyrrolyl-oxoisoindolin via Isothiourea-Catalyzed Acylative Dynamic Kinetic Resolution
作者:Tong-Tong Wang、Jun Cao、Xin Li
DOI:10.1021/acs.orglett.4c02031
日期:2024.7.26
The development of methods for the asymmetricsynthesis of N–N axial chirality remains elusive and challenging. Here, we disclose a method for the construction of N–N axially chiral pyrrolyl-oxoisoindolins along with central chiralityvia the isothiourea (ITU)-catalyzed acylative dynamickineticresolution (DKR). Axial chirality was introduced into the acylative DKR of hemiaminals for the first time