Results 31 to 40 of about 17,511 (250)

Weak Interactions in Cocrystals of Isoniazid with Glycolic and Mandelic Acids

Crystals, 2021
This work deals with the preparation of pyridine-3-carbohydrazide (isoniazid, inh) cocrystals with two α-hydroxycarboxylic acids. The interaction of glycolic acid (H2ga) or d,l-mandelic acid (H2ma) resulted in the formation of cocrystals or salts of ...
Raquel Álvarez-Vidaurre, Alfonso Castiñeiras, Antonio Frontera, Isabel García-Santos, Diego M. Gil, Josefa M. González-Pérez, Juan Niclós-Gutiérrez, Rocío Torres-Iglesias   +7 more
doaj   +1 more source

Synthesis of New trans-2-Benzyl-3-(furan-2-yl)-4-substituted-1,2,3,4-tetrahydroisoquinolinones

Molecules, 2006
The reaction of homophthalic anhydride and N-(furan-2-yl-methylidene)- benzylamine in different solvents and varying temperatures was studied in detail. Mixtures of the expected trans- and cis-1,2,3,4-tetrahydroisoquinoline-4-carboxylic acids trans-5 and
Mariana D. Palamareva, Ivan D. Kozekov, Meglena I. Kandinska   +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

The comparative study of linear solvatation energy relationship for the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents [PDF]

Journal of the Serbian Chemical Society, 2012
Protic and aprotic solvent effects on the reactivity of picolinic, nicotinic and isonicotinic acid, as well as of some substituted nicotinic acids with diazodiphenylmethane (DDM) were investigated.
Drmanić Saša Ž., Nikolić Jasmina B., Marinković Aleksandar D., Jovanović Bratislav Ž.   +3 more
doaj   +1 more source

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

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

3-tert-butoxycarbonylamino-pyridine-2-carboxylic Acid [PDF]

Molbank, 2007
To the carbamic acid tert-butylester 1 (1.03 g, 4.08 mmol) in methanol (15 ml) was added 1.4 equivalents of NaOH (2N).[...]
Rachid Mamouni, Mohammadine El Haddad, Mohamed Akssira   +2 more
openaire   +1 more source

Designed Lewis Acid–Base Passivation for High Performance Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
ABSTRACT Silicon's high cost and long energy payback time remain major barriers to the global expansion of solar power. In contrast, metal–halide perovskites offer abundant, solution‐processable absorbers, and have achieved efficiencies of 25%–30%, positioning them as strong competitors to silicon.
Afna Manaf, Hiba Shahulhameed, Bhabani Sankar Swain, Shengzhong (Frank) Liu, Adel Najar   +4 more
wiley   +1 more source

Packed Hydrogel Microfibers as Scaffolds Supporting Dynamic Cellular Behavior and Biomaterial Inks in 3D Printing

Advanced Healthcare Materials, EarlyView.
Packed hydrogel microfiber (PHM) materials consist of flexible and high aspect ratio hydrogel components that, as a bulk material, are simultaneously mechanically robust and dynamic. Cells cultured in or on PHM scaffolds can be influenced by topographical cues or interact with a dynamic environment that permits cell spreading and multicellular ...
M. Gregory Grewal, Remington M. Martinez, Georgia T. Helein, Montserrath G. Ibarra Rivera, Rodolfo Martinez Jr., Jenna L. Sumey, Steven R. Caliari, Christopher B. Highley   +7 more
wiley   +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