Results 181 to 190 of about 181,740 (264)

Advances in Sustainable Production of Bio‐Derived 5‐Alkoxymethylfurfural and Levulinate Esters: A Comprehensive Review

Carbon Energy, EarlyView.
The present review discusses the advancement in the catalytic synthesis of 5‐alkoxymethylfurfural (AMF) and levulinate esters (LEs) from the aspects of catalytic systems, reaction mechanisms, product isolation, and techno‐economic analysis, supplying valuable insights toward future sustainable and efficient manufacture of AMF and LEs. ABSTRACT The huge
Jun Zhang, Chunxiang Yang, Yuhe Liao, Jiawei Wang, Chengyu Li, Rui Shan, Haoran Yuan   +6 more
wiley   +1 more source

Silylium‐Ion‐Initiated Disulfidation of Internal Alkynes With Disulfides

Chemistry – A European Journal, EarlyView.
Silylium‐ion initiation enables the disulfidation of internal alkynes with diaryl disulfides. The catalytic turnover is maintained by the sulfonium ion ArS(ArSSAr)+ as a sulfenium‐ion carrier that reacts with an alkyne to form a thiirenium ion. Its ring opening by disulfide addition yields the 1,2‐bis(arylthio)‐substituted alkene product with E:Z > 95 ...
Dáiríne M. Morgan, Hendrik F. T. Klare, Martin Oestreich   +2 more
wiley   +1 more source

Indoor and outdoor air pollutants concentrations at preschools in Melusi informal settlement, Pretoria, South Africa. [PDF]

Discov Public Health
Bhuda M, Malatji KD, Nchabeleng MS, Shirinde J.   +3 more
europepmc   +1 more source

Sustainable Germanium Recovery From Germanium Dioxide via Halogen‐Free Chemical Vapor Transport

Chemistry – A European Journal, EarlyView.
Recovery of the critical element Ge from GeO2 and SiO2/GeO2 mixtures was investigated based on an endothermic chemical vapor transport via GeO, formed with natural gas or a hydrogen(10%)‑argon(90%) mixture and water vapor. (This picture was partly created with AI, engine: Adobe Firefly).
Julian Burkhart, Christian A. Bömer, Jana Milanovic, Victoria S. Drescher, Igor Atanasov, Moritz Maxeiner, Klaus Müller‑Buschbaum   +6 more
wiley   +1 more source

The Effect of <i>Cotinus coggygria</i> Mouthwash on Halitosis and Oral Hygiene in Orthodontic Patients: A Randomized Clinical Trial. [PDF]

Dent J (Basel)
Granika A, Karamesinis K, Mylonopoulou IM, Alexiou A, Sifakakis I.   +4 more
europepmc   +1 more source

Extracellularly Activatable Conjugates of RGD Peptidomimetics and Cryptophycin for αVβ3‐Targeted Cancer Therapy

Chemistry – A European Journal, EarlyView.
Integrin αVβ3‐targeting small‐molecule drug conjugates (SMDCs) were synthesized by conjugating a cryptophycin payload through a neutrophil elastase‐cleavable NPV‐PABC linker. RGD peptidomimetic and linker epimers served as controls for targeting and enzymatic cleavage, and the resulting conjugates displayed subnanomolar cytotoxicity in vitro.
Dominic Seißenschmidt, Henriette Hartung, Jonah Kammer, Norbert Sewald   +3 more
wiley   +1 more source

Nitrooxylation in Organic Synthesis: From Classical Nitrate Ester Formation to Modern Catalytic Strategies

Chemistry – A European Journal, EarlyView.
Nitrooxylation—the installation of nitrate esters (–ONO2) has evolved from classical mixed‐acid protocols to catalytic and mechano‐, flow‐, photo‐, and electrochemical strategies. This review delineates ionic and radical manifolds for C–ONO2 bond formation, emphasizing mechanistic control, selected substrate scope, and selectivity.
Jayanta Dey, Dmitry Katayev
wiley   +1 more source

Comparative lipidomics and volatile profiling reveal distinct aroma signatures in Arbas cashmere goat meat from grazing and housed feeding systems. [PDF]

J Anim Sci Biotechnol
Zhang C, Du X, Fan D, Zhang J, Wang A, Song Z, Zhong P, Bai R, Diao Q, Zhang N.   +9 more
europepmc   +1 more source

Mild C─F Activation of Azido(per)Fluoroalkanes

Chemistry – A European Journal, EarlyView.
Mild and selective activation of C(sp3)–F bonds in azido(per)fluoroalkanes using thiolates was developed, leading to novel functionalized azides. The reaction is initiated by nucleophilic attack of the sulfur atom to the terminal nitrogen of the azido group, followed by fluoride ion elimination.
Olena Shaitanova, María Martínez Mallo, Sergii Suikov, Blanka Klepetářová, Josef Filgas, Petr Slavíček, Lucie Bednárová, Petr Beier   +7 more
wiley   +1 more source

Impact of Frying Olive Oil Type on the Physicochemical and Sensory Quality of Commercial Chicken Nuggets. [PDF]

Foods
Pintado T, Álvarez MD, Herranz B, Delgado-Pando G.   +3 more
europepmc   +1 more source