Fe(NO3)3·9H2O is used as an efficient and effective catalyst for the one‐pot three‐component synthesis of highlyfunctionalizedpiperidines from aromatic aldehydes, anilines and b–ketoesters in ethanol at ambient temperature. This procedure includes some important aspects like the easy work‐up, no need to column chromatography, simple and readily available precursors, and good to high yields.
SULFAMIC ACID CATALYZED FIVE COMPONENT REACTION FOR EFFICIENT AND ONE-POT SYNTHESIS OF DENSELY FUNCTIONALIZED TETRAHYDROPYRIDINE SCAFFOLD
作者:ANIKETP SARKATE、JAIPRAKASH N SANGSHETTI、NANASAHEB B DHARBALE、AJINKYA P SARKATE、DEVANAND B SHINDE
DOI:10.4067/s0717-97072015000100012
日期:——
acid in One-pot assembling of aromatic aldehydes, aromaticamines and β-ketoesters to afford densely functionalized tetrahydropyridines in 70-89% yield has been presented. The advantage of sulfamic acid against other catalysts in terms of yield has been studied. The effect of different solvents on reaction time and yield has also been studied. Easy work up and mild reaction condition are the advantages
Catalytic Asymmetric Five-Component Tandem Reaction: Diastereo- and Enantioselective Synthesis of Densely Functionalized Tetrahydropyridines with Biological Importance
作者:Feng Shi、Wei Tan、Ren-Yi Zhu、Gui-Juan Xing、Shu-Jiang Tu
DOI:10.1002/adsc.201300001
日期:2013.5.17
aldehydes and anilines have been established in the presence of a chiral phosphoric acid, affording densely functionalized tetrahydropyridines with concomitant generation of five σ bonds and two stereogenic centers in high diastereo‐ and enantioselectivities (up to >99:1 dr, 95:5 er). In addition, the first isolation and preparation of a diene species as the key intermediate of the reaction has been
Organocatalyzed highly atom economic one pot synthesis of tetrahydropyridines as antimalarials
作者:Mridul Misra、Swaroop Kumar Pandey、Vivek Parashar Pandey、Jyoti Pandey、Renu Tripathi、Rama Pati Tripathi
DOI:10.1016/j.bmc.2008.11.062
日期:2009.1
A highly atom economic one pot synthesis of tetrahydropyridines was achieved by L-proline/TFA catalysed multicomponent reaction of beta-keto-esters, aromatic aldehydes and anilines. The synthesized compounds were screened against Plasmodium falciparum in vitro and one of them showed antimalarial activity with MIC as low as 0.09 mu g/mL. (C) 2008 Elsevier Ltd. All rights reserved.
One-pot multicomponent synthesis of highly substituted piperidines using p-toluenesulfonic acid monohydrate as catalyst
p-Toluenesulfonic acid monohydrate (p-TsOH center dot H2O) is a highly effective and efficient catalyst for the one-pot multicomponent coupling of aldehydes, amines, and beta-ketoesters in EtOH at ambient temperature to give highly functionalized piperidines in high yields. This one-pot reaction has some important advantages such as the easy workup procedure, simple and readily available precursors, nontoxic and inexpensive catalyst, and good to high yields.