Results 31 to 40 of about 6,415 (151)

Computational and Machine‐Learning Studies of Ethylene Oligomerization

Carbon and Hydrogen, EarlyView.
This review focuses on recent advances in computational and machine‐learning studies of ethylene oligomerization, highlighting mainstream catalyst systems based on Co, Ta, Ti, Zr, and Hf, with particular emphasis on Fe‐ and Cr‐based catalysts and their controlling factors governing reactivity and LAO distribution.
Zhixin Qin, Zhihui Song, Heying Feng, Li Jin   +3 more
wiley   +1 more source

Synthesis and Application of Bioactive N‐Functionalized Aziridines

Angewandte Chemie, Volume 137, Issue 44, October 27, 2025.
This review discusses modern synthetic methods for the preparation of aziridine‐containing small molecules, including biocatalytic, electrocatalytic, and photocatalytic strategies. We highlight the compatibility of various synthetic methods with control of the exocyclic N‐substituent.
Hao Tan, Samya Samanta, Nan Qiu, Alexander Adibekian, David C. Powers   +4 more
wiley   +2 more sources

Development of a Novel Polyleucine‐Based Immunopotentiator for Subunit Vaccines Against Group A Streptococcus

Small, EarlyView.
Self‐assembling amphiphilic peptide L15K6 is used as a novel immunoadjuvant for the development of a Group A Streptococcus vaccine. Robust antigen‐specific IgG responses are generated and manage to kill isolated strains of Group A Streptococcus. Cellular and bulk RNA sequencing data reveals that L15K6 regulates immune responses potentially through TLR ...
Lantian Lu, Jazmina L. Gonzalez Cruz, Rabina Giri, Yuexiao Zhang, Sahra Bashiri, Leslie C. Domínguez Cadena, Shuhang Li, Zeinab G. Khalil, Waleed M. Hussein, Jingwen Wang, Jolynn Kiong, Xuehan Lu, Jiahui Zhang, Miao Lu, Wenbin Huang, Wei Yang Kong, Ummey Jannatun Nahar, Prashamsa Koirala, Zhong Guo, Patricia Walden, Antje Blumenthal, Jakob Begun, Kirill Alexandrov, Istvan Toth, Rachel J. Stephenson, Mariusz Skwarczynski   +25 more
wiley   +1 more source

Applications of the Conceptual Density Functional Theory Indices to Organic Chemistry Reactivity [PDF]

, 2016
Indexación: Web of ScienceTheoretical reactivity indices based on the conceptual Density Functional Theory (DFT) have become a powerful tool for the semiquantitative study of organic reactivity.
Domingo, Luis R., Pérez, Patricia, Ríos-Gutiérrez, Mar   +2 more
core   +2 more sources

Tuning High Temperature Performance Through Targeted Halide Substitution in a Bis(Imino)Pyridine‐Iron Ethylene Polymerization Catalyst

Journal of Applied Polymer Science, Volume 143, Issue 11, March 15, 2026.
Through systematic developments in catalyst design, we report a series of exceptionally active on iron catalysts for the polymerization of ethylene that can run at high operating temperature forming highly linear polyethylene waxes with narrow dispersity and high levels of vinyl chain ends that could be influenced by the operating temperature.
Elizabeth Ogbe, Yanping Ma, Yizhou Wang, Gregory A. Solan, Qiuyue Zhang, Tongling Liang, Wen‐Hua Sun   +6 more
wiley   +1 more source

Relative Reactivities of Acetals and Ethers under Friedel-Crafts Conditions [PDF]

, 1994
Competition experiments have been performed to determine the relative reactivities of acetals and ethers toward allyltrimethylsilane in the presence of catalytic amounts of BF3 OEt2.
Dau-Schmidt, Denmark, Denmark, Dermer, Hagen, Hosomi, Mayr, McKinley, Noyori, Paul, Torii, von der Brüggen   +11 more
core   +1 more source

The Pentafluorophenyl Cation: A Superelectrophile and Diradical

Angewandte Chemie, Volume 137, Issue 39, September 22, 2025.
From radical to diradical cation. Photoionization (PI) of the thermally generated pentafluorophenyl radical yields the pentafluorophenyl cation in the gas phase. This cation is found to be a diradical with nearly degenerate open‐shell singlet and triplet ground states, and it is even more unstable than the parent phenyl cation by ∼40 kcal mol−1 ...
Enrique Mendez‐Vega, Adrián Portela‐González, Ginny Karir, Patrick Hemberger, Wolfram Sander   +4 more
wiley   +2 more sources

Unexpected course of the attempted conversions of ferrocenyl(hetaryl)methanols into thiols using Lawesson’s reagent [PDF]

, 2017
A series of secondary methanols bearing ferrocenyl and a hetaryl substituent was tested in reactions with Lawesson’s reagent (LR) aimed at the preparation of respective methanethiols.
Hamera-Faldyga, Roza, Heimgartner, Heinz, Mlostoń, Grzegorz   +2 more
core   +1 more source

On the reduction of 4-oxo-4h-benzopyran-3-carbaldehydes : global and local electrophilicity patterns [PDF]

, 2004
The theoretical global and local electrophilicity patterns of substituted and chelated 4-oxo-4H-benzopyran-3-carbaldehydes (formylchromones) have been evaluated using the electrophilicity index proposed by Parr et al [J. Am. Chem. Soc. 1999, 121, 1922].
Araya Maturana, Ramiro, Escobar, Carlos A., Heredia Moya, Jorge, Pérez, Patricia   +3 more
core   +2 more sources

Triaza-based amphiphilic chelators : synthetic route, in vitro characterization and in vivo studies of their Ga(III) and Al(III) chelates [PDF]

, 2010
Radiogalium chelates are important for diagnostic imaging in nuclear medicine (PET and ƴ-scintigraphy). Micelles are adequate colloidal vehicles for the delivery of therapeutic and diagnostic agents to organs and tissues.
André, João P., Geraldes, Carlos F. G. C., Prata, M. Isabel M., Sá, Arsénio Vasconcelos   +3 more
core   +1 more source