作者:Kai Chen、Qi-Kai Kang、Yuntong Li、Wen-Qiang Wu、Hui Zhu、Hang Shi
DOI:10.1021/jacs.1c12622
日期:2022.1.26
availability of both phenols and amines, aniline synthesis through direct coupling between these starting materials would be extremely attractive. Herein, we describe a rhodium-catalyzed amination of phenols, which provides concise access to diverse anilines, with water as the sole byproduct. The arenophilic rhodium catalyst facilitates the inherently difficult keto–enol tautomerization of phenols by means of
Enhancing the efficiency of the ruthenium catalysts in the reductive amination without an external hydrogen source
作者:Artemy R. Fatkulin、Oleg I. Afanasyev、Alexey A. Tsygankov、Denis Chusov
DOI:10.1016/j.jcat.2021.12.018
日期:2022.1
Catalytic reductive reactions are essential for laboratory and industrial-scale organicsynthesis. However, the nowadays trend is the development of new, more and more complicated reducing systems, which hinders the application of such highly efficient approaches in practice. Another way to achieve the highly active systems is enhancing the activity of the earlier developed catalysts with simple structures
A Novel Three-Component Reaction of Anilines, Formaldehyde and β-Diketones: Simple Synthesis of 3-Spirosubstituted 1,2,3,4-Tetrahydroquinolines
作者:Aliaksei Kadutskii、Nikolas Kozlov
DOI:10.1055/s-2006-956450
日期:——
A new three-component reaction of cyclic β-diketones, formaldehyde and substituted anilines is described. The reaction provides a simple synthetic method for the one-pot preparation of 3-spirosubstituted 1,2,3,4-tetrahydroquinolines containing different substituents at the N-atom. This reaction also gives the opportunity to unite in one molecule the 1,2,3,4-tetrahydroquinoline, cyclic β-dicarbonyl, 2-azaspiro and some other (e.g., benzylic, bicyclic, adamantyl) fragments.
本文介绍了一种由环 δ-二酮、甲醛和取代苯胺组成的新的三组分反应。该反应提供了一种简单的合成方法,可用于一锅制备在 N 原子上含有不同取代基的 3-巯基取代的 1,2,3,4-四氢喹啉。该反应还提供了将 1,2,3,4-四氢喹啉、环δ-二羰基、2-氮杂螺和一些其他(如苄基、双环、金刚烷基)片段结合在一个分子中的机会。