Keyword search (4,163 papers available)

Concordia Publications:

Title Authors PubMed ID
1 A high-fidelity simulator for evaluation of hemodynamic response during cardiopulmonary resuscitation in hypogravity environments Lord Z; Andrade C; Leroux L; Kadem L; 41741473
CHEMISTRY
2 Transcriptomic analysis suggests the inhibition of DNA damage repair in green alga Raphidocelis subcapitata exposed to roxithromycin. Guo J, Bai Y, Chen Z, Mo J, Li Q, Sun H, Zhang Q 32505758
CHEMISTRY
3 Four Aromatic Intradiol Ring Cleavage Dioxygenases from Aspergillus niger. Semana P, Powlowski J 31540981
CHEMISTRY
4 How Well Does the Hole-Burning Action Spectrum Represent the Site-Distribution Function of the Lowest-Energy State in Photosynthetic Pigment-Protein Complexes? Zazubovich V, Jankowiak R 31265294
CHEMISTRY
5 Virtual screening, docking, and dynamics of potential new inhibitors of dihydrofolate reductase from Yersinia pestis. Bastos Lda C, de Souza FR, Guimarães AP, Sirouspour M, Cuya Guizado TR, Forgione P, Ramalho TC, França TC 26494420
CHEMISTRY
6 Docking and molecular dynamics studies of peripheral site ligand-oximes as reactivators of sarin-inhibited human acetylcholinesterase. de Almeida JS, Cuya Guizado TR, Guimarães AP, Ramalho TC, Gonçalves AS, de Koning MC, França TC 26612005
CHEMISTRY
7 O(6)-Alkylguanine DNA Alkyltransferase Repair Activity Towards Intrastrand Cross-Linked DNA is Influenced by the Internucleotide Linkage. O'Flaherty DK, Wilds CJ 26692563
CHEMISTRY
8 A bio-inspired synthesis of oxindoles by catalytic aerobic dual C-H functionalization of phenols. Huang Z, Askari MS, Esguerra KVN, Dai TY, Kwon O, Ottenwaelder X, Lumb JP 29861988
CHEMISTRY
9 The Chemical Ecology of Predatory Soil Bacteria. Findlay BL 27035738
CHEMISTRY
10 Mechanistic studies of new oximes reactivators of human butyryl cholinesterase inhibited by cyclosarin and sarin. de Lima WE, Francisco A, da Cunha EF, Radic Z, Taylor P, França TC, Ramalho TC 27125569
CHEMISTRY

 

Title:A bio-inspired synthesis of oxindoles by catalytic aerobic dual C-H functionalization of phenols.
Authors:Huang ZAskari MSEsguerra KVNDai TYKwon OOttenwaelder XLumb JP
Link:https://www.ncbi.nlm.nih.gov/pubmed/29861988?dopt=Abstract
DOI:10.1039/c5sc02395e
Publication:Chemical science
Keywords:
PMID:29861988 Category:Chem Sci Date Added:2019-06-20
Dept Affiliation: CHEMISTRY
1 Department of Chemistry , McGill University , Montreal , QC H3A 0B8 , Canada . Email: jean-philip.lumb@mcgill.ca.
2 Department of Chemistry and Biochemistry , Concordia University , Montreal , QC H4B 1R6 , Canada . Email: dr.x@concordia.ca.

Description:

A bio-inspired synthesis of oxindoles by catalytic aerobic dual C-H functionalization of phenols.

Chem Sci. 2016 Jan 01;7(1):358-369

Authors: Huang Z, Askari MS, Esguerra KVN, Dai TY, Kwon O, Ottenwaelder X, Lumb JP

Abstract

Nitrogen-containing heterocycles are fundamentally important to the function of pharmaceuticals, agrochemicals and materials. Herein, we report a bio-inspired approach to the synthesis of oxindoles, which couples the energetic requirements of dehydrogenative C-N bond formation to the reduction of molecular oxygen (O2). Our method is inspired by the biosynthesis of melanin pigments (melanogenesis), but diverges from the biosynthetic polymerization. Mechanistic analysis reveals the involvement of CuII-semiquinone radical intermediates, which enable dehydrogenative carbon-heteroatom bond formation that avoids a catechol/quinone redox couple. This mitagates the deleterious polarity reversal that results from phenolic dearomatization, and enables a high-yielding phenolic C-H functionalization under catalytic aerobic conditions. Our work highlights the broad synthetic utility and efficiency of forming C-N bonds via a catalytic aerobic dearomatization of phenols, which is currently an underdeveloped transformation.

PMID: 29861988 [PubMed]





BookR developed by Sriram Narayanan
for the Concordia University School of Health
Copyright © 2011-2026
Cookie settings
Concordia University