Results 21 to 30 of about 40,681 (241)

Synthesis and Characterization of Novel Methyl (3)5-(N-Boc-piperidinyl)-1H-pyrazole-4-carboxylates

Molecules, 2021
Series of methyl 3- and 5-(N-Boc-piperidinyl)-1H-pyrazole-4-carboxylates were developed and regioselectively synthesized as novel heterocyclic amino acids in their N-Boc protected ester form for achiral and chiral building blocks.
Gita Matulevičiūtė, Eglė Arbačiauskienė, Neringa Kleizienė, Vilija Kederienė, Greta Ragaitė, Miglė Dagilienė, Aurimas Bieliauskas, Vaida Milišiūnaitė, Frank A. Sløk, Algirdas Šačkus   +9 more
doaj   +1 more source

CeO2/CuO@N-GQDs@NH2 nanocomposite as a reusable and efficient catalyst for the synthesis of piperidines [PDF]

Nanochemistry Research, 2020
An efficient pseudo six-component synthesis of bis-spiropiperidinesis presented by one-pot condensation of formaldehyde, aromatic amine and dimedone or N,N-dimethyl-barbituric acid using CeO2/CuO@N-GQDs@NH2 nanocomposite at room temperature. The catalyst
Hossein Shahbazi-Alavi, Javad Safaei-Ghomi, Mozhgan Esfandiari   +2 more
doaj   +1 more source

PIPERIDINE : A CORRECTION. [PDF]

The Lancet, 1898
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Tunnicliffe, F. W., Rosenheim, Otto
openaire   +2 more sources

Exploration of Spirocyclic Derivatives of Ciprofloxacin as Antibacterial Agents

Molecules, 2022
The previously reported as well as newly synthesized derivatives of the 1-oxa-9-azaspiro[5.5]undecane were employed in the synthesis of thirty-six derivatives of ciprofloxacin using commercially available 7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1,4 ...
Alexei Lukin, Mikhail Chudinov, Tatiana Vedekhina, Elizaveta Rogacheva, Lyudmila Kraeva, Olga Bakulina, Mikhail Krasavin   +6 more
doaj   +1 more source

Highly Diastereoselective Functionalization of Piperidines by Photoredox Catalyzed α-Amino C–H Arylation and Epimerization

Journal of the American Chemical Society, 2020
We report a photoredox catalyzed α-amino C–H arylation reaction of highly substituted piperidine derivatives with electron deficient cyano(hetero)arenes.
Morgan M. Walker, Brian Koronkiewicz, Shuming Chen, K. N. Houk, J. M. Mayer, J. Ellman   +5 more
semanticscholar   +1 more source

Crystal structure of a tetranuclear CuII complex with an O,N,N′-donor Schiff base ligand: hexa-μ2-acetato-bis(2-{[(2,2,6,6-tetramethylpiperidin-4-yl)imino]methyl}phenolato-κ3O,N,N′)tetracopper(II)

Acta Crystallographica Section E: Crystallographic Communications, 2016
The title compound, [Cu4(CH3COO)6(C16H23N2O)2], lies across a twofold rotation axis. The asymmetric unit contains two independent CuII ions. The symmetry-unique terminal CuII ion is O,N,N′-coordinated by a 2-{[(2,2,6,6-tetramethylpiperidin-4-yl)imino ...
Guohui Huang, Xiaoxuan Liu
doaj   +1 more source

The endo-aza-Michael addition in the synthesis of piperidines and pyrrolidines.

Organic and biomolecular chemistry, 2020
Intramolecular endo-aza-Michael additions are categorised in various ways. Firstly whether they are single or double reactions, secondly whether they are endo- or exo-activated (or both), thirdly whether the Michael acceptor is an alkene or an alkyne ...
R. Bates, Weiting Ko, Viktor Barát
semanticscholar   +1 more source

Scope and Limitations of γ-Valerolactone (GVL) as a Green Solvent to be Used with Base for Fmoc Removal in Solid Phase Peptide Synthesis

Molecules, 2019
GVL is a green solvent used in Fmoc-based solid-phase peptide synthesis. It is susceptible to ring opening in the presence of bases such as piperidines, which are used to remove the Fmoc protecting group.
Ashish Kumar, Anamika Sharma, Beatriz G. de la Torre, Fernando Albericio   +3 more
doaj   +1 more source

Epidemiological Study of Multidrug Resistant and Efficiency of Piperidine Compounds against Hospital Acquired Opportunistic Pathogens in Tamil Nadu, India

Journal of Pure and Applied Microbiology, 2020
The pathogens attained through nosocomial infection exhibit a higher degree of antibiotic resistance due to constant exposure to drug therapy. There is a need to develop alternate therapeutics for treating these resistant pathogens.
Rajendran Venkatasubramani, Thirumoorthy Viswanathan   +1 more
doaj   +1 more source

The formation of all-cis-(multi)fluorinated piperidines by a dearomatization-hydrogenation process

Nature Chemistry, 2019
Piperidines and fluorine substituents are both independently indispensable components in pharmaceuticals, agrochemicals and materials. Logically, the incorporation of fluorine atoms into piperidine scaffolds is therefore an area of tremendous potential ...
Zackaria Nairoukh, Marco Wollenburg, Christoph Schlepphorst, K. Bergander, F. Glorius   +4 more
semanticscholar   +1 more source