Results 11 to 20 of about 797 (180)

A mechanistic study of the ammonolysis of alkyl acetoacetates in water. Formation of 1,5-dimethyl-2,6,9- triazabicyclo[3.3.1]nonane-3,7-dione as the main product

, 2001
Ammonolysis of alkyl acetoacetates with 15% NH3 in water at room temperature initially lead to formation of alkyl β-aminocrotonates which slowly converted into 1,5-dimethyl-2,6,9-triaza-bicyclo[3.3.1]nonane-3,7-dione as the main ...
Ramirez, A., Paredes, R., Cadavid, J., Moreno-Fuquen, Rodolfo, Kennedy, A.R., Abonia, R., Jaramillo, A., Hormaza, A.   +7 more
core   +4 more sources

Recent advances in polymeric chemically amplified positive resists: Materials and design strategies. [PDF]

Smart Mol
This review summarizes recent advances in the molecular design of positive chemically amplified resists, focusing on photoacid generators and polymer architectures. Key strategies for enhancing sensitivity—including self‐amplification effects, copolymerization of sensitive monomers, controlled polymerization, and photosensitized chemically amplified ...
Zhou L, Li H, Zhang J, Xin H.
europepmc   +2 more sources

Microbiological Transformation of Silicon Compounds: Enantioselective Reduction of Trimethylsilylalkyl Acetoacetates and their Carba-Analogues [PDF]

, 1983
The trimethylsilylalkyl acetoacetates 1 b and 2 b as well as their carba analogues 1 a and 2 a have been reduced microbiologically by Kloeckera corticis (ATCC 20109), leading to the corresponding ( + )-3(S)-hydroxybutanoates 3b, 4b, 3a, and 4a.
Linoh, Haryanto, Ernst, Ludger, Tacke, Reinhold, Kieslich, Klaus, Stumpf, Burghard, Abraham, Wolf-Rainer   +5 more
core   +2 more sources

Synthesis of Ester-Substituted Indolizines from 2‑Propargyloxypyridines and 1,3-Dicarbonyls

, 2022
Two new complementary Au­(I)-catalyzed methods for the preparation of ester-substituted indolizines from easily accessible 2-propargyloxypyridines and either acetoacetates or dimethyl malonate are reported.
Carolyn E. Anderson (2041879), Richard J. Staples (1458085), Colin T. Hartgerink (6900815), Chase J. Scholtens (13113747), Haleigh I. Bos (13113741), Daniel M. Dreher (13113744)   +5 more
core   +1 more source

Acetoacetates Derived From Vegetable Oils: A Platform for Tailor‐Made Vinylogous Urethane Foams

Advanced Functional Materials, EarlyView.
A renewable vegetable oil is converted into acetoacetate‐functionalized precursors for the preparation of catalyst‐free vinylogous urethane foams. Room‐temperature foaming with n‐pentane generates lightweight cellular materials, while the choice of amine enables control over foam structure and mechanical properties.
Krzysztof Polaczek, Priscilla de Souza Lima, Olga Gotkiewicz, Ondrej Kopilec, Radka Hobzova, Lívia Kanizsová, Mikelis Kirpluks, Ondrej Sedlacek, Hynek Beneš   +8 more
wiley   +1 more source

Unveiling Endotypes in Systemic Lupus Erythematosus Through Multiomic Analysis: Insights Into Cardiovascular and Renal Complications

Arthritis &Rheumatology, EarlyView.
Objective Systemic lupus erythematosus (SLE) shows clinical and molecular heterogeneity, and cardiovascular (CV) complications and lupus nephritis (LN) remain leading causes of morbidity and mortality. This study investigated whether omic profiling can reveal molecular endotypes linked to these outcomes.
Tomás Cerdó, Laurel Woodridge, Sagrario Corrales, Juan Rafael Muñoz‐Castañeda, Ana Isabel Torralbo, Anisur Rahman, Filipa Farinha, Rafaela Ortega Castro, Pedro Segui, Ismael Sanchez‐Pareja, Laura Muñoz‐Barrera, Christian Merlo, Desiree Ruiz‐Vilchez, M. Carmen Ábalos‐Aguilera, Pilar Font, Nuria Barbarroja Puerto, PRECISESADS Clinical Consortium, Lorenzo Beretta, Barbara Vigone, Jacques‐Olivier Pers, Alain Saraux, Valérie Devauchelle‐Pensec, Divi Cornec, Sandrine Jousse‐Joulin, Bernard Lauwerys, Julie Ducreux, Anne‐Lise Maudoux, Carlos Vasconcelos, Ana Tavares, Esmeralda Neves, Raquel Faria, Mariana Brandão, Ana Campar, António Marinho, Fátima Farinha, Isabel Almeida, Miguel Angel Gonzalez‐Gay Mantecón, Ricardo Blanco Alonso, Alfonso Corrales Martínez, Ricard Cervera, Ignasi Rodríguez‐Pintó, Gerard Espinosa, Rik Lories, Ellen De Langhe, Nicolas Hunzelmann, Doreen Belz, Torsten Witte, Niklas Baerlecken, Georg Stummvoll, Michael Zauner, Michaela Lehner, Eduardo Collantes, Ma Carmen Castro‐Villegas, Norberto Ortego, María Concepción Fernández Roldán, Enrique Raya, Inmaculada Jiménez Moleón, Enrique de Ramon, Isabel Díaz Quintero, Pier Luigi Meroni, Maria Gerosa, Tommaso Schioppo, Carolina Artusi, Carlo Chizzolini, Aleksandra Zuber, Donatienne Wynar, Laszló Kovács, Attila Balog, Magdolna Deák, Márta Bocskai, Sonja Dulic, Gabriella Kádár, Falk Hiepe, Velia Gerl, Silvia Thiel, Manuel Rodriguez Maresca, Antonio López‐Berrio, Rocío Aguilar‐Quesada, Héctor Navarro‐Linares, Marta Alarcón‐Riquelme, Alejandro Escudero‐Contreras, M. Ángeles Aguirre‐Zamorano, Carlos Perez‐Sanchez, Elizabeth C. Jury, Chary Lopez‐Pedrera   +84 more
wiley   +1 more source

Catalytic activity of TiO2 nanoparticles in cyclization reactions for pyrazolone formation: DNA binding analysis via spectroscopy, X-ray crystallography, and molecular docking

Journal of Saudi Chemical Society
This method of sustainable synthesis utilizes a range of aromatic/heterocyclic aldehydes, phenylhydrazine, and ethyl acetoacetates. The TiO2 nanoparticle catalyst facilitates cyclization reactions, yielding pyrazolone derivatives with exceptional ...
Mehtab Parveen, Uzma, Mohammad Azam, Mohammad Azeem, Afroz Aslam, Masrat Bashir, Mahboob Alam   +6 more
doaj   +1 more source

High‐Strength, Fluorescent, Triboelectric Cellulose Hydrogel‐Derived Plastics Through Molecular Network Engineering for Energy Harvesting and Motion Sensing

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Multifunctional cellulose hydrogel‐derived plastics (FCBPs) are fabricated via a novel molecular network engineering strategy involving epoxy cross‐linking, solvent exchange, and hot‐pressing techniques. The resulting materials exhibit high mechanical strength, excellent thermal/solvent resistance, stable fluorescence, complete biodegradability, and ...
Fuyuan Lu, Yifan Jiao, Yuxuan Chen, Zhezhe Zhou, Gaobo Lou, Caicai Li, Gaojie Jiao, Mark Lynch, Jialong Wen, Xiaochun Zhang, Pingan Song, Dan Sun   +11 more
wiley   +1 more source

Synthesis, characterization, and antimicrobial evaluation of a small library of ferrocene-containing acetoacetates and phenyl analogs: the discovery of a potent anticandidal agent

, 2014
A library of 16 2-substituted methyl acetoacetates containing ferrocenyl or phenyl units was designed to disclose differences in the antimicrobial activity of ferrocene-containing compounds and their phenyl analogs.
Niko S. Radulović, Stojanovic-Radic, Zorica, Zorica Stojanović-Radić, Mladenović, Marko, Radulovic, Niko, Stevanović, Dragana, Mladenovic, Marko Z., Stevanović, Dragana D., Radulović, Niko S., Goran A. Bogdanović, Marko Z. Mladenović, Dragana Stevanović, Vukicevic R., Vukićević, Rastko D., Bogdanović, Goran A., Rastko D. Vukićević   +15 more
core   +1 more source

β‐Hydroxybutyrate reduces neuronal excitability via GIRK channels

Epilepsia, EarlyView.
β‐Hydroxybutyrate decreases neuronal excitability by activating GIRK channels through HCAR2 signaling, providing a cellular mechanism that may contribute to the antiseizure effects of the ketogenic diet. Abstract Objective The ketogenic diet is used to treat drug‐resistant epilepsy, yet the molecular mechanisms coupling metabolic state to seizure ...
Soudabeh Naderi, John Williamson, Jhanvi Patel, Samikksha Kumar, Huayu Sun, Lucy Dang Nguyen, Katarzyna Rękawek, Ifrah Zawar, Jaideep Kapur   +8 more
wiley   +1 more source