Catalytic asymmetric synthesis of medium-sized bridged biaryls

N Kotwal, P Chauhan - Chemical Communications, 2022 - pubs.rsc.org
Despite the persistent presence of medium-sized (seven-to nine-membered) scaffolds in
natural products and biologically active molecules, their asymmetric syntheses have always …

Recent progress and prospects in the organocatalytic Morita–Baylis–Hillman reaction

M Maneesha, SH Haritha, T Aneeja, G Anilkumar - RSC advances, 2024 - pubs.rsc.org
The organocatalytic asymmetric Morita–Baylis–Hillman (MBH) reaction produces a
significant carbon–carbon bond formation that involves the addition of α, β-unsaturated …

Organocatalytic asymmetric synthesis of carbo-and oxacyclic seven-membered bridged biaryls via nucleophile-dependent switchable domino processes

N Kotwal, Tamanna, A Changotra, P Chauhan - Organic Letters, 2023 - ACS Publications
We disclose herein a highly diastereo-and enantioselective divergent synthesis of seven-
membered biaryl-bridged carbo-and oxacyclic frameworks by utilizing the catalytic ability of …

An interrupted Corey–Chaykovsky reaction of designed azaarenium salts: synthesis of complex polycyclic spiro-and fused cyclopropanoids

B Singh, AJ Ansari, N Malik, SSV Ramasastry - Chemical Science, 2023 - pubs.rsc.org
Simultaneous dearomatizing spirannulation of pyridinium salts is still in its infancy. Here, we
present an organized skeletal remodeling of designed pyridinium salts by utilizing an …

Organocatalytic Asymmetric Morita–Baylis–Hillman Reaction of Isatins with Vinyl Sulfones

HJ He, RQ Wang, LX Wan, LY Zhou, HY Li… - The Journal of …, 2023 - ACS Publications
The organocatalytic asymmetric Morita–Baylis–Hillman (MBH) reaction of isatin derivatives
with various vinyl sulfones is disclosed. Chiral sulfone-containing 3-hydroxyoxindoles were …

Diastereoselective Access to Seven-Membered Benzosultams via Palladium-Catalyzed Ring-Opening [3+ 2]-Annulation

JA Xiao, H Zhang, XL Luo, RF Meng, W Wang… - Organic …, 2023 - ACS Publications
A palladium-catalyzed ring-opening [3+ 2]-annulation of spirovinylcyclopropanyl oxindoles
with seven-membered cyclic N-sulfonylimines has been developed. A wide range of seven …

Access to Chiral Bridged Biaryls via Brønsted Acid-Catalyzed Asymmetric Addition of Alcohols to Fluoroalkylated Biaryl Oxazepines

B Zhu, W Yuan, T Tu, G Dai, L Zhou, S Ren… - Organic …, 2025 - ACS Publications
We disclose herein a chiral phosphoric-acid-catalyzed enantioselective addition reaction of
alcohols to fluoroalkylated biaryl 1, 3-oxoazepines, which furnished a wide range of bridged …

Chemoselective Intramolecular Morita–Baylis–Hillman Reaction; Acrylamide and Ketone as Sluggish Reacting Partners on a Labile Framework

KC Bharadwaj - The Journal of Organic Chemistry, 2024 - ACS Publications
Chemoselectivity is an important issue frequently encountered while working over labile
precursors. Carbonyl compounds with a heteroatom at the β carbon are sensitive precursors …

Access to CF 3-benzofulvenes via palladium-catalyzed cascade arylation/Trost–Oppolzer cyclization/double-bond isomerization

R Sateesh, J Prudhviraj, C Priyanka… - Chemical …, 2024 - pubs.rsc.org
Herein, we demonstrated a Pd-catalyzed cascade reaction that involves arylation, Trost–
Oppolzer type Alder ene reaction, and double bond isomerization using the 4-(2 …

Phosphine-Catalyzed Intramolecular Vinylogous Aldol Reaction of α-Substituted Enones

A Mondal, B Satpathi, SSV Ramasastry - Organic Letters, 2021 - ACS Publications
We demonstrate the first phosphine-catalyzed intramolecular vinylogous aldol reaction
(IVAR) of α-substituted enones. This strategy provides access to various pentannulated …