一种制备苯基化氨基吡啶的新方法产生了以前难以获得的有机催化剂

IF 2.7 3区 化学 Q2 CHEMISTRY, ORGANIC
Mikhail Kozlov, Fatma Saady, Or Fleischer, Shai Ben Sasson, Ibrahim Amer, Scott J. Miller, Moshe Portnoy
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引用次数: 0

摘要

对二烷基氨基吡啶是一类重要的亲核有机催化剂,广泛应用于醇改性反应等领域。然而,要获得这些催化剂的某些变体,特别是那些具有空间堵塞的二次球的催化剂,仍然具有挑战性,甚至无法使用先前建立的合成路线。Lewis酸促进简单氨基吡啶与相应醇的苄基化或环化二苄基化有效地克服了这些缺点。这种创新的方法可以合成以前难以获得的(2,5‐二芳基吡咯烷酮)吡啶和新的(N‐苄基‐N‐甲基胺)吡啶,它们在芳基取代基上具有延伸的邻烷氧基尾部。新型催化剂具有体积较大的二级球,在二醇两亲体的磷酸化过程中表现出优异的活性和高位点选择性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A New Methodology for Preparing Benzylated Aminopyridines Yields Previously Inaccessible Organocatalysts
p‐Dialkylaminopyridines represent a key class of nucleophilic organocatalysts, widely used in alcohol‐modifying reactions, among other applications. However, access to certain variants of these catalysts, particularly those with sterically congested secondary sphere, remains challenging or even unfeasible using previously established synthetic routes. Lewis acid‐promoted benzylation or cyclative dibenzylation of simple aminopyridines with corresponding alcohols effectively overcomes these shortcomings. This innovative approach enables the synthesis of previously inaccessible (2,5‐diarylpyrrolidino)pyridines and novel (N‐benzyl‐N‐methylamino)pyridines bearing extended ortho‐alkoxy tails on the aryl substituents. The new catalysts, characterized by their bulky secondary sphere, exhibit outstanding activity and high site‐selectivity in the phosphorylation of a model diol amphiphile.
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来源期刊
CiteScore
5.40
自引率
3.60%
发文量
752
审稿时长
1 months
期刊介绍: The European Journal of Organic Chemistry (2019 ISI Impact Factor 2.889) publishes Full Papers, Communications, and Minireviews from the entire spectrum of synthetic organic, bioorganic and physical-organic chemistry. It is published on behalf of Chemistry Europe, an association of 16 European chemical societies. The following journals have been merged to form two leading journals, the European Journal of Organic Chemistry and the European Journal of Inorganic Chemistry: Liebigs Annalen Bulletin des Sociétés Chimiques Belges Bulletin de la Société Chimique de France Gazzetta Chimica Italiana Recueil des Travaux Chimiques des Pays-Bas Anales de Química Chimika Chronika Revista Portuguesa de Química ACH—Models in Chemistry Polish Journal of Chemistry.
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