Results 151 to 160 of about 55,918 (190)

<i>B</i>‑Alkyl-borabicyclo[3.3.1]nonane Reagents Promote Closed-Shell Nickel-Catalyzed Alkylarylation Toward Encoded Cyclooctene Monomers. [PDF]

open access: yesACS Cent Sci
Ravn AK   +8 more
europepmc   +1 more source

Nickel Chain-Walking Catalysis: A Journey to Migratory Carboboration of Alkenes

Accounts of Chemical Research, 2023
ConspectusChain-walking offers extensive opportunities for innovating synthetic methods that involve constructing chemical bonds at unconventional sites. This approach provides previously inaccessible retrosynthetic disconnections in organic synthesis. Through chain-walking, transition metal-catalyzed alkene difunctionalization reactions can take place
Yangyang Li, Guoyin Yin
openaire   +2 more sources

Transition Metal Catalyzed Enantioselective Migratory Functionalization Reactions of Alkenes through Chain‐Walking

Chinese Journal of Chemistry, 2022
Comprehensive Summary“Chain‐walking” reactions could realize to modify a molecule at the position far away from the active site. It has been a hot topic in the research field of organic synthesis. As a number of achievements have been made by researchers, the products of transition metal‐catalyzed chain‐walking reactions could be obtained with good ...
Min Zhang, Yuqi Ji, Chun Zhang
openaire   +1 more source

Chain Walking as a Strategy for Iridium-Catalyzed Migratory Amidation of Alkenyl Alcohols to Access α-Amino Ketones

Journal of the American Chemical Society, 2022
Catalytic carbon-nitrogen bond formation in hydrocarbons is an appealing synthetic tool to access valuable nitrogen-containing compounds. Although a number of synthetic approaches have been developed to construct a bifunctional α-amino carbonyl scaffold in this realm, installation of an amino functionality at the remote and unfunctionalized aliphatic ...
Yeongyu Hwang   +3 more
openaire   +2 more sources

Iridium-Catalyzed Migratory Terminal C(sp3)–H Amidation of Heteroatom-Substituted Internal Alkenes via Olefin Chain Walking

Journal of the American Chemical Society, 2023
Hydroamination facilitated by metal hydride catalysis is an appealing synthetic approach to access valuable nitrogen-containing compounds from readily available unsaturated hydrocarbons. While high regioselectivity can be achieved usually for substrates bearing polar chelation groups, the reaction involving simple alkenes frequently provides ...
Qing Wang   +3 more
openaire   +2 more sources

Migratory effect of middle predator in a tri-trophic food chain model

Mathematical Methods in the Applied Sciences, 2010
Summary: A tri-trophic food chain model in a two-patch environment is considered. Although the tri-trophic food chain model is well studied, a study considering migration of middle predators is lacking. To the best of our knowledge, the present investigation is the first study in this direction.
Chowdhury, Tanmay   +2 more
openaire   +2 more sources

Delay Linear Chains in Mathematical Biology: Migratory Birds, Stem Cell Maturation, and Intracellular Chlamydia Infection

2020
We consider a simple linear chain, which represents how organisms pass through a number of intermediate stages before reaching a final phase, allowing time delays between consecutive compartments. The final state of this linear system is determined explicitly as a function of initial data and transition rates. Three biological applications are provided:
Das Bornali, Röst Gergely
openaire   +2 more sources

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