Multicomponent Reaction for the Synthesis of 1,2,3,4,6-Pentasubstituted Piperidines Catalyzed by NIS
作者:Liu Pengpeng
DOI:10.3987/com-21-14479
日期:——
An efficient, suitable and high yielding method has been developed for the synthesis of substituted piperidines via multicomponent, one-pot domino reaction of β-keto ester, aromatic amines, and aromatic aldehydes in the presence of catalytic amount of N-iodosuccinimide (NIS) in ethanol. Atom economy, mild reaction conditions, good to excellent yields, operational simplicity and easy work-up are some
Efficient one-pot synthesis of functionalized piperidine scaffolds via ZrOCl2·8H2O catalyzed tandem reactions of aromatic aldehydes with amines and acetoacetic esters
作者:Sarita Mishra、Rina Ghosh
DOI:10.1016/j.tetlet.2011.03.116
日期:2011.6
A highly efficient diastereoselective one-potsynthesis of functionalized piperidines has been developed based on an aqua-compatible ZrOCl2·8H2O catalyst via tandem reactions of aromatic aldehydes, amines, and acetoacetic esters.
developed for the synthesis of diversely functionalized dihydro-2-oxypyrroles and tetrahydropyridines. One-pot four-component reaction of dialkyl acetylenedicarboxylates, amines and formaldehyde in the presence of 2,6-pyridinedicarboxylic acid in methanol at room temperature provides dihydro-2-oxypyrroles. The combination of β-ketoesters, aromatic aldehydes and amines yielded tetrahydropyridine derivatives
Saccharin‐catalyzed multicomponent cascade reactions for the synthesis of 1,2,3,4,
<scp>6‐pentasubstituted</scp>
piperidines
作者:Zihao Xia、Lisha Wu、Shiqiang Yan、Hanqing Zhao
DOI:10.1002/jhet.4628
日期:——
A convenient and efficient method is developed for the synthesis of 1,2,3,4,6-pentasubstituted piperidines via a three-component, one-pot domino reaction of β-ketoesters, aromatic aldehydes, and aromatic amines in the presence of a catalytic amount of saccharin in methanol at 40°C. The desired piperidines could be easily collected through simple filtration with excellent diastereoselectivities.