Results 21 to 30 of about 156,373 (305)

Catalytic selective ring opening of polyaromatics for cleaner transportation fuels

, 2022
The selective C-C bond cleavage of mono- and bicyclic naphthenic molecules via catalytic ring opening plays a vital role in refining low-quality fossil oils and pyrolysis oils derived from municipal solid waste or waste biomass and tyres.
Schaller, David, Tabulo, Ben, Lee, Adam F, Murzin, Dmitry Y, Bhargava, Suresh K, Jampaiah, Deshetti, Wilson, Karen   +6 more
core   +1 more source

Photosonochemical catalytic ring opening of α-epoxyketones

Beilstein Journal of Organic Chemistry, 2007
The combination of ultrasound and photochemical methods has been used for the catalytic ring opening of α-epoxyketones by 1-benzyl-2,4,6-triphenylpyridinium tetrafluoroborate (NBTPT) as photocatalyst in methanol.
Hamid R. Memarian, Ali Saffar-Teluri
doaj   +1 more source

Photoinitiated Cationic Ring-Opening Polymerization of Octamethylcyclotetrasiloxane

Molecules, 2023
Photochemical techniques have recently been revitalized as they can readily be adapted to different polymerization modes to yield a wide range of complex macromolecular structures.
Zehra Gul Coban, Huseyin Cem Kiliclar, Yusuf Yagci   +2 more
doaj   +1 more source

An electrochemical approach to aluminum-based redox switchable ring opening polymerization

, 2023
We report the electrochemically switchable reactivity of (salfen)Al(OiPr) (salfen = 1,1′-di(2,4-bis-tert-butyl-salicylimino)ferrocene) toward the ring opening polymerization of various cyclic esters, ethers, and carbonates.
Amy, Lai, Zachary, Hern, Ramzi, Massad, Paula, Diaconescu   +3 more
core   +1 more source

Oxidative radical ring-opening/cyclization of cyclopropane derivatives

Beilstein Journal of Organic Chemistry, 2019
The ring-opening/cyclization of cyclopropane derivatives has drawn great attention in the past several decades. In this review, recent efforts in the development of oxidative radical ring-opening/cyclization of cyclopropane derivatives, including ...
Yu Liu, Qiao-Lin Wang, Zan Chen, Cong-Shan Zhou, Bi-Quan Xiong, Pan-Liang Zhang, Chang-An Yang, Quan Zhou   +7 more
doaj   +1 more source

Synthesis and Frictional Characteristics of Bio-Based Lubricants Obtained from Fatty Acids of Castor Oil

Lubricants, 2023
The depletion of oil reserves and concerns about the environmental impact of the use and incorrect disposal of mineral lubricants have been promoting the development of bio-based lubricants.
Paulo Roberto Campos Flexa Ribeiro Filho, Matheus Rocha do Nascimento, Silvia Shelly Otaviano da Silva, Francisco Murilo Tavares de Luna, Enrique Rodríguez-Castellón, Célio Loureiro Cavalcante   +5 more
doaj   +1 more source

Carbodiimide Ring-opening Metathesis Polymerization

ACS Central Science, 2022
Controlled incorporation of nitrogen into macromolecular skeletons is a long-standing challenge whose resolution would enable the preparation of soft materials with the scalability of man-made plastics and functionality of Nature's proteins. Nylons and polyurethanes notwithstanding, nitrogen-rich polymer backbones remain scarce, and their synthesis ...
Kaplan, Samuel W., Johnson, J. Drake, Wang, Zian, Sheiko, Sergei S., Maw, Mitchell, Zhukhovitskiy, Aleksandr V., Toth, Jozsef   +6 more
openaire   +2 more sources

Recent Advances in Transition Metal-Catalyzed Ring-Opening Reaction of Aziridine

Compounds
The smallest strained, saturated N-heterocycles, such as aziridine, can be a valuable building block in synthetic organic chemistry. Ring-opening reactions with various nucleophiles could be the most important strategy to synthesize various value-added ...
Partha Sarathi Bera, Yafia Kousin Mirza, Tarunika Sachdeva, Milan Bera   +3 more
doaj   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen, Calogero Virgone, Antje Redlich, Michael Abele, Ricardo Lopez‐Almaraz, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Maja Mazic Cesen, Andrea Ferrari, Malgorzata A. Krawczyk, Yves Reguerre, Dominik T. Schneider, Ines B. Brecht, Charlotte Rigaud, Bilgehan Yalcin, Rainer Claus, Christian Vokuhl, Constantin Lapa, Jörg Fuchs, Segolene Hescot, Thomas Walter, Julien Hadoux, Daniel Orbach   +23 more
wiley   +1 more source

Lewis Acid-Initiated Ring-Opening Reactions of Five- and Six-Membered Cyclic Ethers Based on the Oxonium Ylide Intermediates

Organics
In light of the small ring strain of five/six-membered cyclic ethers, constructing complex molecules via ring-opening reactions has consistently been a highly challenging topic in organic synthesis.
Dandan Jiang, Jun Xiao, Yingzhen Zhang, Kunming Liu, Juanhua Li, Jinbiao Liu   +5 more
doaj   +1 more source