Kinetic and structure-activity studies of the triazolium Ion-catalyzed intramolecular stetter reaction
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Mechanistic studies of the triazolium ion‐catalyzed intramolecular Stetter reaction using initial rates analysis in NEt3/NEt3. HCl buffered methanol showed the reaction to be first order in catalyst and zero order in aldehyde over a broad range of aldehyde concentrations. The observed reaction rate is higher for catalysts bearing N‐aryl substituents with electron‐withdrawing groups. A concurrent, NHC‐independent substrate isomerization was also observed and found to demonstrate a first order dependence on aldehyde concentration. The reported data are consistent with deprotonation to form the Breslow intermediate being turnover‐limiting in this process.
Collett , C J , Young , C M , Massey , R S , O'Donoghue , A & Smith , A D 2021 , ' Kinetic and structure-activity studies of the triazolium Ion-catalyzed intramolecular stetter reaction ' , European Journal of Organic Chemistry , vol. 2021 , no. 26 , 202100384 , pp. 3670-3675 . https://doi.org/10.1002/ejoc.202100384
European Journal of Organic Chemistry
Copyright © 2021 The Authors. European Journal of Organic Chemistry published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
DescriptionFunding: Engineering and Physical Sciences Research Council (Grant Number(s): EP/E03795X/1, EP/S019359/1).
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