Results 11 to 20 of about 121,691 (212)

Comparison between 1,2-Dihydropyridine and 1,4-Dihydropyridine on Hydride-Donating Ability and Activity [PDF]

Molecules, 2022
In this paper, detailed comparisons of the driving force in thermodynamics and intrinsic force in the kinetics of 1,2-dihydropyridine and 1,4-dihydropyridine isomers of PNAH, HEH, and PYH in hydride transfer reactions are made. For 1,2-PNAH and 1,4-PNAH,
Jin-Ye Zhang, Xiao-Qing Zhu
exaly   +5 more sources

First Organocatalytic Asymmetric Synthesis of 1-Benzamido-1,4-Dihydropyridine Derivatives [PDF]

Molecules, 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 β-isocupreidine catalyst are reported.
Fernando Auria-Luna, Eugenia Marqués-López, Raquel P. Herrera   +2 more
doaj   +4 more sources

An isoxazole strategy for the synthesis of 4-oxo-1,4-dihydropyridine-3-carboxylates [PDF]

Beilstein Journal of Organic Chemistry, 2022
A method has been developed for the preparation of 2-alkyl-6-aryl-, 2-aryl-6-aryl and 2,6-diaryl-5-aryl/hetaryl-substituted methyl 4-oxo-1,4-dihydropyridine-3-carboxylates by Mo(CO)6-mediated ring expansion of methyl 2-(isoxazol-5-yl)-3-oxopropanoates ...
Timur O. Zanakhov, Ekaterina E. Galenko, Mikhail S. Novikov, Alexander F. Khlebnikov   +3 more
doaj   +2 more sources

Dimethyl 4-(4-formylphenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate

Acta Crystallographica Section E, 2008
The title compound, C18H19NO5, is a product of the Hantzsch reaction of p-phthalaldehyde, methyl acetoacetate, and ammonium acetate. The 1,4-dihydropyridine ring of the molecule adopts a flattened boat conformation.
Fei Teng, Fanpeng Kong, Qingjian Liu
doaj   +2 more sources

3-Methyl 5-{3-[(4-Methylbenzenesulfonyl)oxy]propyl} 4-(2,3-Dichlorophenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate

Molbank, 2022
The 1,4-dihydropyridine is a ubiquitous scaffold employed not only in medicinal chemistry but also in organic synthesis, given its ability to act as a hydrogen transfer reagent, thus emulating NAD(P)H reducing agents.
Carlotta Borgarelli, Stijn Lenaers, Wim M. De Borggraeve, Ermal Ismalaj   +3 more
doaj   +2 more sources

Diisopropyl 1-(4-methoxyphenyl)-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate

Acta Crystallographica Section E, 2011
In the title compound, C28H32N2O7, the 1,4-dihydropyridine ring adopts a flattened boat conformation. The two benzene rings are approximately perpendicular to the dihydropyridine ring, forming dihedral angles of 84.29 (9) and 82.96 (9)
Kamini Kapoor, Vivek K. Gupta, Rajni Kant, Milind P. Pawar, Hitendra S. Joshi   +4 more
doaj   +2 more sources

Dimethyl 2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate

Acta Crystallographica Section E, 2009
In the crystal of the title compound, C11H15NO4, the molecules are linked into sheets by N—H...O and C—H...O hydrogen bonds.
Zhenfeng Zhang, Dong Xian, Jiange Wang, Guisheng Zhang   +3 more
doaj   +2 more sources

Catalytic efficiency of GO-PANI nanocomposite in the synthesis of N-Aryl-1,4-Dihydropyridine and hydroquinoline derivatives [PDF]

Scientific Reports
In this research, graphene oxide-polyaniline (GO-PANI) nanocomposite was successfully synthesized and its catalytic performance was evaluated for the synthesis of N-aryl-1,4-dihydropyridine (1,4-DHP) and hydroquinoline derivatives. The GO nanosheets were
Hossein Ghafuri, Moghadaseh keshvari, Fatemeh Eshrati, Peyman Hanifehnejad, Atefeh Emami, Hamid Reza Esmaili Zand   +5 more
doaj   +2 more sources

RETRACTED: Synthesis of efficient cobalt–metal organic framework as reusable nanocatalyst in the synthesis of new 1,4-dihydropyridine derivatives with antioxidant activity

Frontiers in Chemistry, 2022
Efficient cobalt–metal organic framework (Co-MOF) was prepared via a controllable microwave-assisted reverse micelle synthesis route. The products were characterized by SEM image, N2 adsorption/desorption isotherm, FTIR spectrum, and TG analysis. Results
Omar dheyauldeen Salahdin, Indrajit Patra, Mohammad Javed Ansari, Samar Emad Izzat, Khusniddin Fakhriddinovich Uktamov, Mohammed Kadhem Abid, Ahmed B. Mahdi, Ali Thaeer Hammid, Yasser Fakri Mustafa, Himanshu Sharma   +9 more
doaj   +2 more sources

Dimethyl 4-(3,4-dimethoxyphenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate

Acta Crystallographica Section E, 2010
In the title compound, C19H23NO6, the 1,4-dihydropyridine ring is twisted slightly from planarity, with a maximum deviation of 0.101 (1) Å, and adopts a very flattened boat conformation.
Tara Shahani, Hoong-Kun Fun, B. Palakshi Reddy, V. Vijayakumar, S. Sarveswari   +4 more
doaj   +2 more sources