Results 141 to 150 of about 971 (170)

Improved Protocol for the Three‐Component Biginelli Reactions and Biginelli‐Like Mannich Reactions of Carbamates, Aldehydes, and Ketones.

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
Li‐Wen Xu, Zong‐Ting Wang, Chun‐Gu Xia, Pei‐Qing Zhao   +3 more
openaire   +1 more source

Recent Advances in Biginelli-type Reactions

Current Organic Chemistry, 2020
The effective and high yielding synthesis of poly-functionalized pyrimidines, using multicomponent reactions (MCRs), is imperative in organic and medicinal chemistry. The classic Biginelli reaction is a typically one-pot three-component cyclocondensation reaction involving an aldehyde, a β-ketoester and urea, resulting in the construction of multi ...
Majid M. Heravi, Vahideh Zadsirjan
openaire   +1 more source

ChemInform Abstract: Biginelli Reaction: An Overview

ChemInform, 2016
AbstractReview: [56 refs.
Honnappa Nagarajaiah, Arindam Mukhopadhyay, Jarugu Narasimha Moorthy   +2 more
openaire   +1 more source

Biginelli Type Reaction with Tetroses Derivatives

HETEROCYCLES, 1988
Reaction de O-ethylidene-2,4 erythrose et -threose avec l'acetylacetate de methyle, l'uree et la thiouree; obtention principalement d'analogues de nucleosides ...
M. Valpuesta Fernández, F. J. L用ez Herrera, T. Lupi溶 Cobos   +2 more
openaire   +1 more source

A piperidinium triflate catalyzed Biginelli reaction

Tetrahedron, 2010
A piperidinium triflate, 1,1,3,5-tetramethyl-4-oxo-2,6-diphenylpiperidinium triflate, in acetonitrile efficiently catalyzes one synthetic operational construction of biopertinent hydropyrimidines from respective aldehyde, β-dicarbonyl, and urea/thiourea building blocks.
Chennan Ramalingan, Su-Jung Park, In-Sook Lee, Young-Woo Kwak   +3 more
openaire   +1 more source

Acyl pyruvates as synthons in the Biginelli reaction

Tetrahedron Letters, 2010
Abstract Chlorotrimethylsilane-promoted Biginelli-type reaction of ethyl 2,4-dioxo-4-phenylbutanoate, benzaldehyde, and various (thio)ureas is explored. The outcome of the reaction depends on the structure of the (thio)urea used and is strongly affected by the acceptor electronic properties of the COOEt substituent in the molecule of the starting β ...
Sergey V. Ryabukhin, Andrey S. Plaskon, Semen S. Bondarenko, Eugeniy N. Ostapchuk, Oleksandr O. Grygorenko, Oleg V. Shishkin, Andrey A. Tolmachev   +6 more
openaire   +1 more source

Multicomponent Copolycondensates via the Simultaneous Hantzsch and Biginelli Reactions

ACS Macro Letters, 2015
The tricomponent Biginelli reaction and the tetracomponent Hantzsch reaction which share the same reaction modules (aldehyde and β-ketone ester) have been found compatible. Therefore, a series of copolycondensates containing both 1,4-dihydropyridine (1,4-DHP) and 3,4-dihydropyrimidin-2(1H)-one (3,4-DHPM) in the main chains via the simultaneous Hantzsch
Wu, Haibo, Fu, Changkui, Zhao, Yuan, Yang, Bin, Wei, Yen, Wang, Zhiming, Tao, Lei   +6 more
openaire   +5 more sources

Organocatalyzed Biginelli Reactions

2015
Ângelo de Fátima, Bruna Silva Terra, Leonardo da Silva Neto, Taniris Cafiero Braga   +3 more
openaire   +1 more source

Biginelli Reaction

2012
K. Hof, K. M. Lippert, P. R. Schreiner
openaire   +1 more source

Efficient One-Pot Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones via a Three-Component Biginelli Reaction

Molecules, 2021
Nicole Mariotti, Giovanna Bosica
exaly