Results 31 to 40 of about 18,349 (284)

1,2,3-Triazole-4(5)-amines – Convenient Synthetic Blocks for the Construction of Triazolo-Annulated Heterocycles

Журнал органічної та фармацевтичної хімії, 2022
Aim. To analyze and summarize the synthetic potential of 1,2,3-triazole-4(5)-amines as efficient building blocks in the synthesis of triazolo-annulated pyridine, azine and azepine systems. Results and discussion.
Natalia O. Syrota, Sergiy V. Kemskiy, Lesya M. Saliyeva, Mykhailo V. Vovk   +3 more
doaj   +1 more source

Hydrogen-bond induced surface core-level shift in pyridine carboxylic acids [PDF]

, 2001
Intermolecular hydrogen bonding in thick films of pyridine carboxylic acids (isonicotinic; picolinic and bi-isonicotinic acid) evaporated onto rutile TiO2(1 1 0) has been investigated with X-ray photoelectron spectroscopy and X-ray absorption ...
Schnadt, J, Hillesheimer, H, Patthey, L, Bruhwiler, PA, Nordlund, D, Luo, Yi, Nagasono, M, Krempasky, J, Martensson, N, O'Shea, JN,   +9 more
core   +3 more sources

Magnetic amine-functionalized graphene oxide as a novel and recyclable bifunctional nanocatalyst for solvent-free synthesis of pyrano[3,2-c]pyridine derivatives [PDF]

Nanochemistry Research, 2017
The new magnetic amine-functionalized graphene oxide (Fe3O4-GO-NH2) nanocatalyst was prepared through the reaction of 3-aminopropyltriethoxysilane (APTES) with magnetic graphene oxide (Fe3O4-GO).
Shahnaz Rostamizadeh, Asieh Hemmasi, Negar Zekri   +2 more
doaj   +1 more source

2-Bromopyridine-3-carboxylic acid [PDF]

Acta Crystallographica Section E Structure Reports Online, 2010
Le résidu d'acide carboxylique dans le composé du titre, C(6)H(4) BrNO (2), est tordu hors du plan des autres atomes, comme indiqué par l'angle de torsion (Br) C-C-C-O (carbonyl) de -20,1 (9)°. Dans le cristal, des chaînes supra-moléculaires médiées par des liaisons hydrogène O-H ?N sont formées avec le vecteur de base [201] et les interactions C-H ?O ...
R.A. Howie, Rinaldo Gonçalves, M.V.N. De Souza, Edward R. T. Tiekink, J.L. Wardell   +4 more
openaire   +3 more sources

Bacteria‐Responsive Nanostructured Drug Delivery Systems for Targeted Antimicrobial Therapy

Advanced Materials, EarlyView.
Bacteria‐responsive nanocarriers are designed to release antimicrobials only in the presence of infection‐specific cues. This selective activation ensures drug release precisely at the site of infection, avoiding premature or indiscriminate release, and enhancing efficacy.
Guillermo Landa, Gracia Mendoza, Silvia Irusta, Manuel Arruebo   +3 more
wiley   +1 more source

SYNTHESIS OF C-GLYCOSYL AMINO ACIDS AS STABLE BUILDING BLOCKS FOR MODIFIED GLYCOPEPTIDE SYNTHESIS [PDF]

, 2009
In this thesis, we have studied and synthesized new class of C-glycosly amino acids whose structure features a hetrocycle ring holding the carbohydrate and the amino acid fragments.
ALDHOUN, MOHAMMAD MOUSA, ALDHOUN, MOHAMMAD MOUSA ALI   +1 more
core  

Water Permeates and Plasticizes Amorphous Carbon Dots: Unraveling the Inner Accessibility of the Nanoparticles by Glass Transition Studies

Advanced Materials, EarlyView.
The water permeability of amorphous carbon dots (CDs) is demonstrated by investigating their plasticization. Novel polyamide‐based and amorphous nanoparticles are synthesized by controlling their inner packing density. Water plasticization is evidenced by the decrease of the CDs glass transition temperature with increasing the hydration degree.
Elisa Sturabotti, Valerio Di Lisio, Lucia Cardo, Alessandro Camilli, Estela Moretón Alfonsín, Daniele Cangialosi, Amaia Iturrospe Ibarra, Arantxa Arbe, Maurizio Prato   +8 more
wiley   +1 more source

Biotransformation of fluorophenyl pyridine carboxylic acids by the model fungus Cunninghamella elegans [PDF]

, 2017
1. Fluorine plays a key role in the design of new drugs and recent FDA approvals included two fluorinated drugs, tedizolid phosphate and vorapaxar, both of which contain the fluorophenyl pyridyl moiety. 2.
Mark A. Fox (1483543), Brian Dunne (3120810), Yannick Ortin (1718278), Graham Sandford (1951078), William Palmer-Brown (3120813), Cormac D. Murphy (681908)   +5 more
core   +1 more source

Thermal and mesomorphic behavior of hydrogen-bonded liquid crystals of new pyridine derivatives

Discover Applied Sciences
The fascinating supramolecular structures formed through intermolecular hydrogen bonding (HB) interactions have gained importance in materials and biological science research.
Suma Ramachandra Gopady, V. N. Vijayakumar, Raviraj Shetty, Mallikarjun Bhavanari, Srinivasulu Maddasani   +4 more
doaj   +1 more source

Borane-Pyridine: An Efficient Catalyst for Direct Amidation

Molecules
Borane-pyridine acts as an efficient (5 mol%) liquid catalyst, providing improved solubility for the direct amidation of a wide range of aromatic and aliphatic carboxylic acids and amines to form secondary and tertiary carboxamides.
P. Veeraraghavan Ramachandran, Aman Singh, Harry Walker, Henry J. Hamann   +3 more
doaj   +1 more source