An efficient one-pot multi-component synthesis of highly functionalized piperidines
作者:Santosh V. Goswami、Prashant B. Thorat、Sudhakar R. Bhusare
DOI:10.1515/hc-2012-0105
日期:2012.12.1
Abstract A simple, inexpensive and efficientone-pot synthesis of piperidine derivatives was achieved in excellent yield via the three-component reaction of substituted aniline, 1,3-dicarbonyl compound and aromatic aldehyde using phenylboronic acid as catalyst.
Cerium Ammonium Nitrate-Catalyzed Multicomponent Reaction for Efficient Synthesis of Functionalized Tetrahydropyridines
作者:Hong-Juan Wang、Li-Ping Mo、Zhan-Hui Zhang
DOI:10.1021/co100055x
日期:2011.3.14
A highly atom-economic one-pot synthesis of functionalized tetrahydropyridines by a multicomponent condensation reaction of β-ketoester, two equivalents of aromatic aldehyde, and two equivalents of amine in the presence of a catalytic amount of cerium ammonium nitrate (CAN) is reported. In this way, a series of pharmacologically interesting substituted piperidine derivatives were obtained in moderate
The three-component one-potsynthesis of highlyfunctionalizedpiperidine derivatives was carried out by condensing 1,3-dicarbonyl compounds with aromatic aldehydes and aniline using a catalytic amount (10 mol%) of LaCl3·7H2O in methanol at room temperature. The main features of current protocol include easy work up, mild reaction conditions, good yields and high atom economy.Graphical Abstract
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
Organocatalytic asymmetric multicomponent reactions of aromatic aldehydes and anilines with β-ketoesters: facile and atom-economical access to chiral tetrahydropyridines
作者:Xuejian Li、Yanyan Zhao、Haijun Qu、Zhenjun Mao、Xufeng Lin
DOI:10.1039/c2cc38349g
日期:——
The first catalytic asymmetric pseudo five-component (AB(2)C(2) type) reaction is reported. A spirocyclic chiral phosphoric acidcatalyzedone-potmulticomponentreaction of aromatic aldehydes, anilines and beta-ketoesters and afforded highlyfunctionalized enantioenriched tetrahydropyridines with high levels of stereocontrol.