Results 71 to 80 of about 12,719 (269)

Poly (4-vinylpyridine) and polyaniline: As efficient and commercial available basic catalysts for the synthesis of N-amino-2-pyridones under thermal conditions or microwave irradiation [PDF]

, 2014
Poly (4-vinylpyridine) and polyaniline as highly effective base catalysts have catalyzed the three-component reaction of an appropriate aldehyde, cyanoacetic acid hydrazide and malononitrile to prepare of the corresponding N-amino-2-pyridone derivatives.
Amrollahi, Mohammad Ali, Mokhtari, Tayebeh Sattaei, Sheibani, Hassan, Sheikhhosseini, Enayatollah   +3 more
core   +1 more source

Deferasirox Derivatives as Inhibitors of Kallikrein‐Related Peptidases Associated to Neurodegenerative Diseases

ChemMedChem, EarlyView.
Dysregulated proteolysis mediated by kallikrein‐related peptidases (KLKs) and iron overload are involved in the progression of neurodegenerative diseases. Deferasirox, an clinically‐approved iron chelator, and its newly synthesized derivatives have been identified as inhibitors of major central nervous system KLKs with low cytotoxicity and effective ...
Rilès Boumali, Elodie David, Nancy Chaaya, Morane Lucas, Sabrina Aït Amiri, Valérie Lefort, Anthony Nina‐Diogo, Michèle Salmain, Isabelle Petropoulos, Vincent Corcé, Chahrazade El Amri, Candice Botuha   +11 more
wiley   +1 more source

Indirect Anti‐Markovnikov Hydrofunctionalization of Terminal Alkenes via an Alkenyl Thianthrenium Intermediate

Angewandte Chemie, Volume 137, Issue 21, May 19, 2025.
A two‐stage dication pool strategy using alkenyl thianthrenium intermediates has been developed for anti‐Markovnikov hydrofunctionalization. This method differs from previous approaches in its reaction mechanism and addresses their most significant limitation, namely, the restricted generality of the nucleophile. The approach has been extended to other
Bence Sóvári, Péter Angyal, István J. Babcsányi, András M. Kotschy, Ádám Dudás, Gábor Turczel, Szilárd Varga, Tibor Soós   +7 more
wiley   +2 more sources

General Method for the Preparation of Substituted 2-Amino-4H,5H-pyrano[4,3-b]pyran-5-ones and 2-Amino-4H-pyrano[3,2-c]pyridine-5-ones

Molecules, 2000
Reaction of 4-hydroxy-6-methyl-2-pyrone (1a) as well as 4-hydroxy-6-methyl-2(1H)-pyridones (1b-d) with arylmethylene malononitriles or arylmethylene methyl cyanoacetates (2a-h) leads to the formation of the very stable 5,6-fused bicyclic 2-amino-4Hpyran ...
Dieter Heber, Ivo C. Ivanov, Edmont V. Stoyanov   +2 more
doaj   +1 more source

Evaluation of chemical compounds for induction of male sterility in wheat (Triticum aestivum L.) [PDF]

, 2006
The short-list of eleven chemical hybridizing agents (CHAs) showing 98% or more induction of male sterility were identified following application at the pre-meiotic stage of wheat.
Chakraborty, Kajal, Devakumar, C
core  

Understanding the reactivity of triacetic acid lactone [PDF]

, 2016
The chemical industry has been dependent on petroleum-derived carbon for commodity chemicals for the past number of decades, but this practice is not sustainable.
Wanninayake, Umayangani Kumari
core   +3 more sources

Synthesis, Characterization and Electrochemical Properties of Tri‐ and Tetranuclear CoIII‐Oxo Complexes

European Journal of Inorganic Chemistry, Accepted Article.
Heterocubane‐type complexes containing a central [CoIII4O4] core have received increasing interest as surface cut‐outs of active spinel‐type Co3O4 water splitting catalysts. We here report the synthesis of a series of tetranuclear ([Co4O4(O2CR)4(py)4] (R = Me 1, Et 2, n‐Pr 3)) and trinuclear Co(III) carboxylate complexes [CoIII3(μ3‐O)(μ2‐OH)(O2CR)3(py ...
Timo Fockenberg, Niklas Sülzner, Hatem Amin, Christoph Wölper, Christof Hättig, Stephan Schulz   +5 more
wiley   +1 more source

3,4-and 3,5-disubstituted 2-pyridones using an intermolecular cycloaddition/cycloreversion strategy: toward the synthesis of aristopyridinone A [PDF]

, 2015
The intermolecular cycloaddition of pyrazinone precursors with alkyne substrates was evaluated. The resulting regioisomeric [2.2.2]-diketopiperazine alkene cycloadducts were diverted into 2-pyridone products through cycloreversion of the [2.2.2]-bicyclic
Leibowitz, Maren K., Scheerer, Jonathan R., Winter, Ethan S.   +2 more
core   +2 more sources

Catalytic Dehydrogenation of Lauric Acid and a Potential Use in Polyester Synthesis

European Journal of Lipid Science and Technology, EarlyView.
A three‐step reaction sequence was developed to synthesize renewable lauric acid–based dimethyl esters. The sequence consists of a catalytic dehydrogenation of saturated fatty acids with molecular oxygen as oxidant, an esterification with methanol, and a dimerization reaction with dithiols via thia‐Michael addition.
Luis Santos Correa, Emma Stapf, Timo Nonner, Michael A. R. Meier   +3 more
wiley   +1 more source

Synthesis of azo pyridone dyes [PDF]

Hemijska industrija, 2011
Over 50% of all colorants which are used nowdays are azo dyes and pigments, and among them arylazo pyridone dyes (and pigments) have became of interest in last several decades due to the high molar extinction coefficient, and the medium to high light and wet fastness properties. They find application generally as disperse dyes.
Dusan Mijin, Gordana Uscumlic, Natasa Valentic, Aleksandar Marinkovic   +3 more
openaire   +3 more sources