Results 141 to 150 of about 14,101 (268)

Monosubstituted N‐Arylhydroxylamine Chemistry: Integrating Contemporary Synthetic Approaches for the Efficient Construction of Diverse Heterocyclic Scaffolds

Chemistry – A European Journal, EarlyView.
Monosubstituted N‐arylhydroxylamines represent a unique subclass of hydroxylamines that act as pivotal intermediates in redox transformations and as versatile platforms for further synthetic transformations. They serve as key building blocks in the synthesis of architecturally complex heterocycles and other valuable organic compounds.
Michael G. Kallitsakis, Kyriakos D. Nikopoulos, Ioannis N. Lykakis   +2 more
wiley   +1 more source

Paleozoic carbonatites controlled rare-earth-elements mineralization at Bayan Obo. [PDF]

Sci Adv
Li Y, Wu LG, Yu Y, Yang L, Selby D, Li XH.   +5 more
europepmc   +1 more source

Parallel worlds and mixed economies: multi-proxy analysis reveals complex subsistence systems at the dawn of early farming in the northeast Baltic. [PDF]

R Soc Open Sci, 2023
Oras E, Tõrv M, Johanson K, Rannamäe E, Poska A, Lõugas L, Lucquin A, Lundy J, Brown S, Chen S, Varul L, Haferberga V, Legzdiņa D, Zariņa G, Cramp L, Heyd V, Reay M, Pospieszny Ł, Robson HK, Nordqvist K, Heron C, Craig OE, Kriiska A.   +22 more
europepmc   +1 more source

The Asymmetric Self‐Replicative Alkylation of N‐Arylaldimines Using Organolithium Reagents

Chemistry – A European Journal, EarlyView.
Here, we report a new asymmetric autoinductive reaction; the addition of nBuLi to N‐arylaldimines to form chiral lithium amides. The reaction proceeds with full conversion and complete transfer of chirality, representing the first example of an asymmetric autoinductive reaction with organolithium reagents.
Anka Hagelschuer, Paco Visser, Ben L. Feringa   +2 more
wiley   +1 more source

Re-Os dating of the Makimine and Shimokawa VMS deposits for new age constraints on ridge subduction beneath Japanese Islands. [PDF]

Sci Rep
Nozaki T, Takaya Y, Nakayama K, Kato Y.
europepmc   +1 more source

Bioresponsive pseudoGlucosinolates (psGSLs) Release Isothiocyanates (ITCs) in the Presence of Nitroreductases

Chemistry – A European Journal, EarlyView.
This work introduces the concept of pseudoglucosinolates (psGSLs) and reports the synthesis and evaluation of nitroreductase‐responsive psGSLs. These compounds represent a complementary prodrug strategy to natural glucosinolates (GSLs) for the controlled release of isothiocyanates (ITCs), enabling bio‐responsive protein labeling, as demonstrated in ...
Claire C. Jimidar, Charity S. G. Ganskow, Mervic D. Kagho, Aishi Chakrabarti, Lorenz Wiese, Michael Zollo, Ulrike Beutling, Leona C. Cesar, Julia Morud, Kamila Bugaj, Mark Brönstrup, Stephan A. Sieber, Stephan M. Hacker, Philipp Klahn   +13 more
wiley   +1 more source

Recent progress and future prospects of the early solar system chronology. [PDF]

Natl Sci Rev
Amelin Y, Yin QZ.
europepmc   +1 more source

Alkali‐Metal Base Catalyzed Electrocyclization of Isoprene Derivatives

Chemistry – A European Journal, EarlyView.
Simple and abundant alkali‐metal base catalysis in combination with Lewis basic polyamines enables the electrocyclization of isoprene‐derived trienes to cycloheptadienes under neat conditions. Mechanistic insight supported by DFT guides a scalable route to seven‐membered carbocycles which, after reduction, give saturated cycloalkanes relevant as ...
Mikaël Le Roch, Krzysztof Piech, Aurélien Crochet, Andreu Tortajada   +3 more
wiley   +1 more source

Earth orbital rhythms links timing of Deccan trap volcanism phases and global climate change. [PDF]

Sci Adv
Westerhold T, Dallanave E, Penman D, Schoene B, Röhl U, Gussone N, Kuroda J.   +6 more
europepmc   +1 more source

Rapid coupling between solid earth and ice volume during the Quaternary. [PDF]

Sci Rep, 2021
Kuwahara Y, Yasukawa K, Fujinaga K, Nozaki T, Ohta J, Sato H, Kimura JI, Nakamura K, Yokoyama Y, Kato Y.   +9 more
europepmc   +1 more source