Nonbiaryl and heterobiaryl atropisomers: molecular templates with promise for atropselective chemical transformations

E Kumarasamy, R Raghunathan, MP Sibi… - Chemical …, 2015 - ACS Publications
Chirality plays a crucial role in life-sustaining processes, and for this reason asymmetric
synthesis has been a central research theme in many research groups in the field of organic …

Chiral phosphoric acid: a powerful organocatalyst for the asymmetric synthesis of heterocycles with chiral atropisomerism

YD Shao, DJ Cheng - ChemCatChem, 2021 - Wiley Online Library
The past two decades have witnessed unprecedented development and advancement of
chiral phosphoric acid catalysis. Therefore, it is not surprising that the attempts to synthesize …

Highly atroposelective synthesis of arylpyrroles by catalytic asymmetric Paal–Knorr reaction

L Zhang, J Zhang, J Ma, DJ Cheng… - Journal of the American …, 2017 - ACS Publications
A general and efficient method for accessing enantiomerically pure arylpyrroles by utilizing
the catalytic asymmetric Paal-Knorr reaction has been developed for the first time. A wide …

Highly atroposelective synthesis of nonbiaryl naphthalene-1, 2-diamine NC atropisomers through direct enantioselective CH amination

HY Bai, FX Tan, TQ Liu, GD Zhu, JM Tian… - Nature …, 2019 - nature.com
Nonbiaryl NC atropisomer is an important structural scaffold, which is present in natural
products, medicines and chiral ligands. However the direct enantioselective CH amination to …

A bird's eye view of atropisomers featuring a five‐membered ring

D Bonne, J Rodriguez - European Journal of Organic Chemistry, 2018 - Wiley Online Library
An atropisomer is a member of a subclass of restricted rotational conformers–this restricted
rotation giving rise to stereogenic sigma bonds–that can be isolated as separate chemical …

Recent advances in catalytic atroposelective construction of pentatomic heterobiaryl scaffolds

XL He, C Wang, YW Wen, Z Wang, S Qian - ChemCatChem, 2021 - Wiley Online Library
Pentatomic heterobiaryl performs as a key structural motif in various natural products and
bioactive compounds. With the rapid growth of asymmetric catalysis, five‐membered …

Remote control of axial chirality: synthesis of spirooxindole–urazoles via desymmetrization of ATAD

LL Zhang, JW Zhang, SH Xiang, Z Guo, B Tan - Organic letters, 2018 - ACS Publications
For the first time, a desymmetrization strategy empowered the assembly of a class of
optically pure spirooxindole–urazoles possessing an N-Ar stereogenic axis via remote …

AgI‐Catalyzed Reaction of Enol Diazoacetates and Imino Ethers: Synthesis of Highly Functionalized Pyrroles

K Dong, A Humeidi, W Griffith, H Arman… - Angewandte …, 2021 - Wiley Online Library
An unprecedented AgI‐catalyzed efficient method for the coupling of imino ethers and enol
diazoacetates through a [3+ 2]‐cycloaddition/C− O bond cleavage/[1, 5]‐proton transfer …

Copper- and Chiral Nitroxide-Catalyzed Oxidative Kinetic Resolution of Axially Chiral N-Arylpyrroles

LK Verdhi, N Fridman, AM Szpilman - Organic Letters, 2022 - ACS Publications
A readily prepared C2-symmetric, α-hydrogen-substituted chiral hydroxylamine serves as a
precatalyst to generate a chiral nitroxide in situ. This chiral nitroxide catalyst in combination …

Atroposelective Haloamidation of Indoles with Amino Acid Derivatives and Hypohalides

Z Li, M Tang, C Hu, S Yu - Organic letters, 2019 - ACS Publications
An atroposelective coupling of indoles with chiral amino acid-based sulfonamides mediated
by hypohalides is described. A series of 2-amido-3-haloindoles with a C–N chiral axis are …