Metal-mediated synthesis of pyrrolines

NS Medran, A La-Venia, SA Testero - RSC advances, 2019 - pubs.rsc.org
The five-membered, nitrogen-containing pyrroline ring is a privileged structure. This ring is
present in many bioactive compounds from natural sources. Pyrrolines—the dihydro …

Selective cyclization of arylnitrones to indolines under external oxidant-free conditions: Dual role of Rh (III) catalyst in the C–H activation and oxygen atom transfer

RB Dateer, S Chang - Journal of the American Chemical Society, 2015 - ACS Publications
The first example of Rh (III)-catalyzed cyclization of arylnitrones to indolines under external
oxidant-free conditions is presented. An intermolecular coupling of arylnitrones with internal …

Copper-catalyzed intermolecular cyclization between oximes and alkenes: a facile access to spiropyrrolines

B Zhao, HW Liang, J Yang, Z Yang, Y Wei - ACS Catalysis, 2017 - ACS Publications
A Cu-catalyzed protocol has been developed for the rapid construction of a wide spectrum of
structurally interesting spiropyrroline skeletons. This method utilizes readily accessible …

Asymmetric [3+ 2] Annulations to Construct 1, 2‐Bispirooxindoles Incorporating a Dihydropyrrolidine Motif

Q He, W Du, YC Chen - Advanced Synthesis & Catalysis, 2017 - Wiley Online Library
Constructing chiral bispirooxindoles is difficult to achieve but highly attractive owing to their
many potential applications in medicinal chemistry. Here we present an asymmetric [3+ 2] …

Enantioselective formal [3+ 2]-cycloadditions to access spirooxindoles bearing four contiguous stereocenters through synergistic catalysis

JA Xiao, JL Li, XL Cheng, K Chen, H Peng… - Chemical …, 2021 - pubs.rsc.org
An enantioselective ring-opening formal [3+ 2]-cycloaddition of spirovinylcyclopropyl
oxindoles with enals via synergistic catalysis of palladium (0) and a chiral organocatalyst …

[1+ 1+ 3] Annulation of Diazoenals and Vinyl Azides: Direct Synthesis of Functionalized 1‐Pyrrolines through Olefination

V Kanchupalli, S Katukojvala - … Chemie International Edition, 2018 - Wiley Online Library
Abstract A dirhodium carboxylate catalyzed [1+ 1+ 3] annulation reaction of diazoenals and
vinyl azides that gives synthetically important enal‐functionalized 1‐pyrroline derivatives …

Construction of 1-pyrroline skeletons by Lewis acid-mediated conjugate addition of vinyl azides

X Zhu, S Chiba - Chemical Communications, 2016 - pubs.rsc.org
Lewis acid-mediated conjugate addition of vinyl azides to electron-deficient alkenes led to
the efficient construction of 1-pyrroline skeletons. The reactions of vinyl azides with 3 …

Part I: Diastereoselective Reactions Involving β‐Mono‐and β, β′‐Disubstituted Alkylidene Oxindoles: Pondering Alkene Geometry

M Ganesh, MP Rao, SJ Mirajakar - Asian Journal of Organic …, 2018 - Wiley Online Library
Diastereoselective reactions supported by metals and nonmetals offer a multifaceted path
for the synthesis of robust intermediates of value to academia and industry. The reactions …

Copper-catalyzed aerobic oxidative [2+ 3] cyclization/aromatization cascade reaction: atom-economical access to tetrasubstituted 4, 5-biscarbonyl imidazoles

J Xie, Y Huang, H Song, Y Liu, Q Wang - Organic letters, 2017 - ACS Publications
An atom-economical method for accessing tetrasubstituted 4, 5-biscarbonylimidazoles by
reaction between glycine derivatives and 5-alkoxyoxazoles is reported. The method, which …

Asymmetric Michael Addition of Aldimino Esters with Chalcones Catalyzed by Silver/Xing‐Phos: Mechanism‐Oriented Divergent Synthesis of Chiral Pyrrolines

XF Bai, L Li, Z Xu, ZJ Zheng, CG Xia… - … –A European Journal, 2016 - Wiley Online Library
The mechanism‐oriented reaction design for the divergent synthesis of chiral molecules
from simple starting materials is highly desirable. In this work, aromatic amide‐derived …