Results 31 to 40 of about 4,580 (244)

N,N'-Ethylene-bis(benzoylacetoniminato) Copper (II), Cu(C22H22N2O2), a New Reagent for Aromatization of Hantzsch 1,4-Dihydropyridines

Molecules, 2007
A variety of Hantzsch 1,4-dihydropyridines were oxidized to their corresponding pyridines in high yields in the presence of Cu(C22H22N2O2) in refluxing acetic acid.
Majid M Heravi, Saeed Dehghanpour, Fatemeh Derikvand   +2 more
doaj   +1 more source

First organocatalytic asymmetric synthesis of 1-Benzamido-1, 4-Dihydropyridine Derivatives [PDF]

, 2018
Preliminary results concerning the first asymmetric synthesis of highly functionalized 1-benzamido-1, 4-dihydropyridine derivatives via the reaction of hydrazones with alkylidenemalononitriles in the presence of ß-isocupreidine catalyst are reported. The
Auria-Luna, F., Marqués-López, E., Perez Herrera, R.   +2 more
core   +2 more sources

Synthesis and crystal structures of 2-methyl-4-aryl-5-oxo-5H-indeno [1,2-b] pyridine carboxylate derivatives [PDF]

, 2014
Background: Hantzsch 1,4-dihydropyridines (Hantzsch1,4-DHP) have been extensively utilized as the analogs of nicotinamide adenine dinucleotide (NADH) coenzyme to study the mechanism and various redox processes.
A Maquestiau, AL Spek, B Khadikar, B Wang, Bruker, D Cremer, DJ Triggle, DM Stout, Edayadulla Naushad, F Delgado, GM Sheldrick, GM Sheldrick, Günther H Peters, J Bernstein, JJV Eynde, JJV Eynde, LJ Farrugia, M Balogh, M Moghadam, M Nardelli, M Nasr-Esfahani, MF Abdel-wahab, MZ Barakat, N Edayadulla, PF Kurse, Ponnuswamy Mondikalipudur Nanjappagounder, R Nagarajan, RA Janis, Ramesh Pandian, RJ Kill, S Duar, SH Mashraqui, Vinodhkumar Vijayakumar   +32 more
core   +3 more sources

Direct Aminolysis of Ethoxycarbonylmethyl 1,4-Dihydropyridine-3-carboxylates

Molecules, 2015
The ethoxycarbonylmethyl esters of 1,4-dihydropyridines were directly converted into carbamoylmethyl esters in the presence of 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) in good to excellent yields under mild conditions.
Brigita Vigante, Martins Rucins, Aiva Plotniece, Karlis Pajuste, Iveta Luntena, Brigita Cekavicus, Egils Bisenieks, Rufus Smits, Gunars Duburs, Arkadij Sobolev   +9 more
doaj   +1 more source

Cardiovascular Profile of Xanthone-Based 1,4 Dihydropyridines Bearing a Lidoflazine Pharmacophore Fragment

Molecules, 2018
As a follow-up to our previous studies on differently substituted 1,4-dihydropyridines endowed with a peculiar cardiac selectivity, in this paper, a small series of hybrid compounds bearing the pharmacophore fragment of lidoflazine in position 2 or 3 on ...
Alessandra Bisi, Matteo Micucci, Silvia Gobbi, Federica Belluti, Roberta Budriesi, Angela Rampa   +5 more
doaj   +1 more source

Rapid, Greener and One-pot Four Component Synthesis of 1, 4-Dihydropyridine Derivatives

Analytical Chemistry Letters, 2022
In this current research framework, an efficient greener synthesis has been developed for new pyridine derivatives using one-pot four-component reaction. We have synthesized a new series of 1,4-dihydropyridine derivatives in excellent yield via telescopic multicomponent reaction among the aldehyde, malononitrile, anilines and diethyl ...
Jadeja, Kiranba F., Joshi, Hitendra S.
openaire   +1 more source

CERIC (IV) AMMONIUM NITRATE CATAYSED HUNTZSCH SYNTHESIS ,CHARACTERIZATION AND ANTIBACTERIAL ACTIVITY OF 1-4 DIHYDROPYRIDINE [PDF]

, 2020
1,4-Dihydropyridine (1,4-DHP) is among the most beneficial scaffolds that have revolutionized pharmaceutical research with unprecedented biological properties.
G, Vanaja
core   +1 more source

An Efficient Method for The Synthesis of Dihydropyridine by Hantzsch Reaction with Fe/SiO2 Nano Heterogeneous Catalysts [PDF]

, 2020
An efficient method for the synthesis of dihydropyridines (DHPs) by Hantzsch reaction with Fe/SiO2 heterogeneous catalysts was developed. The Fe/SiO2 catalysts was prepared by impregnation method.
Nehemia, P. N., Nyambe, Moola M., Rahman, Ateeq   +2 more
core   +2 more sources

Oxidation of Hantzsch 1,4- Dihydropyridines to Pyridines with Thallium Triacetate [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2003
Hantzsch 1, 4-dihydropyridines (1,4-DHPs) can be oxidized to the corresponding pyridine derivatives by thallium triacetate in high yields.
Mohammad Mahmoodi Hashemi, Mohammad Sadegh Zakeri, Saeed Arianfar   +2 more
doaj  

Catalytic Asymmetric Synthesis of Both Enantiomers of 4‑Substituted 1,4-Dihydropyridines with the Use of Bifunctional Thiourea-Ammonium Salts Bearing Different Counterions

Molecules, 2010
Organoammonium salts composed of a Brønsted acid and an anilinothiourea promoted the Michael addition of β-keto esters and α,β-unsaturated aldehydes in the presence of primary amines to give functionalized 1,4-dihydropyridines enantioselectively.
Kohzo Yoshida, Tsubasa Inokuma, Kiyosei Takasu, Yoshiji Takemoto   +3 more
doaj   +1 more source