Results 41 to 50 of about 2,093,219 (268)

The use of optically active O-alkyl ester hydrochlorides of L-phenylalanine and L-tyrosine as chiral micellar media for the catalysis of diels-alder reactions

Bulletin of the Chemical Society of Ethiopia, 2018
The effect of a range of O-alkyl ester hydrochloride surfactants derived from L-phenylalanine and L-tyrosine as catalysts on the Diels-Alder reaction between cyclopentadiene and methyl acrylate was studied.
P. Caumul, P. Koonja, N. Namooya, A. Prayag, N. Joondan, S. Jhaumeer-Laulloo   +5 more
doaj   +1 more source

Biomimetic Total Synthesis and Paired Omics Identify an Intermolecular Diels-Alder Reaction as the Key Step in Lugdunomycin Biosynthesis. [PDF]

J Am Chem Soc
Microbial natural products are the basis of the majority of the clinical drugs, such as antibiotics, anticancer agents, antifungals and immunosuppressants.
Uiterweerd MT, Nuñez Santiago I, Cunha AV, Havenith RWA, Du C, Zhang L, van der Heul HU, Elsayed SS, Minnaard AJ, van Wezel GP.   +9 more
europepmc   +4 more sources

“Smelltronics”—From Gas to Smell Sensing

Advanced Materials, EarlyView.
The emerging field of smelltronics, encompassing sensing technologies for complex volatile organic compounds, holds significant potential for extracting valuable chemical information. It facilitates the noninvasive, real‐time monitoring of humans, food, and the environment.
Takeshi Ono, Tsunaki Takahashi, Jiangyang Liu, Haruka Honda, Zeng Jing, Wataru Tanaka, Takuro Hosomi, Takeshi Yanagida   +7 more
wiley   +1 more source

Synthesis of 3,4-dihydro-1,8-naphthyridin-2(1H)-ones via microwave-activated inverse electron-demand Diels–Alder reactions

Beilstein Journal of Organic Chemistry, 2014
Substituted 3,4-dihydro-1,8-naphthyridin-2(1H)-ones have been synthesized with the inverse electron-demand Diels–Alder reaction from 1,2,4-triazines bearing an acylamino group with a terminal alkyne side chain.
Salah Fadel, Youssef Hajbi, Mostafa Khouili, Said Lazar, Franck Suzenet, Gérald Guillaumet   +5 more
doaj   +1 more source

A Chemical Framework for Engineering Extracellular Vesicles’ Biointerface to Advance Precision Therapeutics

Advanced Materials, EarlyView.
Extracellular vesicles (EVs) are cell‐derived nanoparticles that mediate intercellular communication through their dynamic biointerfaces. Owing to their intrinsic biological functions, EVs have emerged as promising platforms for biomedical applications.
Leila Pourtalebi Jahromi, Felix Geng, Jan‐Noël Frenzke, Gregor Fuhrmann   +3 more
wiley   +1 more source

Novos materiais poliméricos furânicos baseados na reacção reversível de Diels-Alder [PDF]

, 2011
Doutoramento em QuímicaA futura e inevitável escassez dos recursos fósseis, juntamente com o aumento imprevisível dos seus preços, levou, nas últimas décadas, a um aumento impressionante de iniciativas dedicadas não só à procura de fontes alternativas
Coelho, Dora Salomé Correia
core  

Surprising new dynamics phenomena in Diels–Alder reaction of C60 uncovered with AI [PDF]

Our recently developed physics-informed active learning allowed us to perform extensive AI-accelerated quasi-classical molecular dynamics investigation of the time-resolved mechanism of Diels–Alder reaction of fullerene C60 with 2,3-dimethyl-1,3 ...
Quanhao, Zhang, Pavlo O., Dral, Yi-Fan, Hou   +2 more
core   +1 more source

Adsorption‐Engineered Hydrocarbon Ionomers for Durable Proton‐Exchange Membrane Fuel Cells

Advanced Materials, EarlyView.
Hydrocarbon ionomers suffer from oxidation‐driven interfacial degradation in PEM fuel cell cathodes, leading to catalyst instability. Here, adsorption‐engineered poly(fluorene) ionomers decouple interfacial anchoring from oxidative degradation, enabling strong catalyst–ionomer interactions while resisting electrochemical oxidation.
Heemin Park, Kate Chen, Su Min Ahn, Hengquan Guo, Cy Fujimoto, Jong‐Ho Choi, Lynda Amichi, Danah Kim, Seung Geol Lee, Xiaojing Wang, Jacob S. Spendelow, Sun Young Kang, Panagiotis Bexis, Eun Joo S. Park, Yu Seung Kim   +14 more
wiley   +1 more source

S‐Nitrosothiols as Thiol‐Protecting Groups for Controlled Thiol‐Maleimide Crosslinking of Homogeneous Soft Hydrogels

Advanced Materials, EarlyView.
Rapid thiol‐maleimide addition frequently outpaces mixing, resulting in heterogeneous hydrogels. S‐nitrosothiols act as thiol‐protecting groups, allowing uniform mixing with maleimide‐functionalized polymers before gelation. Sodium thiosulfate or sodium ascorbate then regenerates thiols on demand, triggering controlled thiol‐maleimide crosslinking ...
Julian A. Serna, Michelle J. Iwohn, Maximilian Seifermann, Stefan Heißler, Maike Schliephake, Franziska Dopp, Claudia Muhle‐Goll, Pavel A. Levkin   +7 more
wiley   +1 more source

Niobium Pentachloride Activation of Enone Derivatives: Diels-Alder and Conjugate Addition Products

Molecules, 2002
Niobium pentachloride has proven to be a powerful activating agent for Diels-Alder or conjugate addition reactions of cycloenones. The Diels-Alder product was obtained only with an unsubstituted enone (cyclohexenone) and the highly reactive diene ...
Gil Valdo José da Silva, Valdemar Lacerda Júnior, Mauricio Gomes Constantino   +2 more
doaj   +1 more source