developed for one-pot, five-component synthesis of highlyfunctionalized piperidines from reactions of β-keto esters, aromatic aldehydes, and various amines catalyzed in acetic acid medium. The reaction proceeded smoothly to generate the corresponding product in good yield. We have found that the use of acetic acid as reaction medium has a remarkable beneficial effect on the reaction, allowing it to
Synthesis of highly functionalized piperidines by one-pot multicomponent reaction using tetrabutylammonium tribromide (TBATB)
作者:Abu T. Khan、Mohan Lal、Md. Musawwer Khan
DOI:10.1016/j.tetlet.2010.06.069
日期:2010.8
Tetrabutylammonium tribromide (TBATB) has been found to be an efficient catalyst for the one-potsynthesis of highly substituted piperidines through a combination of 1,3-dicarbonyl compounds, aromatic aldehydes, and various amines in ethanol at room temperature. Atom economy, good yields, environmentally benign, and mild reaction conditions are some of the important features of this protocol.
Iodine catalyzed one-pot five-component reactions for direct synthesis of densely functionalized piperidines
作者:Abu T. Khan、Md. Musawwer Khan、Kranthi K.R. Bannuru
DOI:10.1016/j.tet.2010.07.075
日期:2010.9
convenient one-pot multicomponent reaction (MCR) has been developed for the synthesis of highlyfunctionalized piperidines catalyzed by molecular iodine. This strategy demonstrated five-componentreactions of 1,3-dicarbonyl compounds, amines and aromatic aldehydes in methanol using 10 mol % of iodine at room temperature. This methodology provides an alternative approach for easy access of highly and fully
Synthesis of sulfonated carbon-based solid acid as a novel and efficient nanocatalyst for the preparation of highly functionalized piperidines and acylals: a DFT study
作者:Zahra Hoseinabadi、Seied Ali Pourmousavi、Mahdi Zamani
DOI:10.1007/s11164-016-2448-4
日期:2016.6
Gibbs free energy of reaction. Good consistency between the calculated and observed spectral data was found. Also, Sta-SO3H has been developed for the synthesis of acylals (1,1-diacetate) in high yields through the reaction of aldehydes with acetic anhydride at room temperature under solvent-free conditions. The mild conditions, eco-friendliness, excellent yields, short reaction times and use of an
One-pot Synthesis of Highly Functionalized Tetrahydropyridines: A Camphoresulfonic Acid Catalyzed Multicomponent Reaction
作者:Ruchi Bharti、Tasneem Parvin
DOI:10.1002/jhet.2268
日期:2015.11
method for the synthesis of a series of highlyfunctionalizedtetrahydropyridine derivatives has been achieved via multicomponentreaction of aromatic aldehydes, various amines, and β‐keto esters at room temperature using readily available (±)‐camphor‐10‐sulfonic acid as an organocatalyst. The current protocol offers an atom economic and environmentally benign method for the synthesis of the title compounds