Results 181 to 190 of about 3,483,745 (281)

Expanding the Scope of Indium in Frustrated Lewis Pair Chemistry

open access: yesChemistry – A European Journal, EarlyView.
All good things come in threes: The pyridine‐“protected” FLP tBu2InCH2PtBu2·Py shows three different kinds of reactivity: Besides “typical” FLP activity, it prefers formation of the “soft” isomers for substrates with multiple sites for FLP attack, but reacts with SO2 as a “masked” In/C FLP by insertion into the In─C bond.
Daniel N. Heuer   +5 more
wiley   +1 more source

Chiral Pyrazolinylidene Complexes for Asymmetric Catalysis

open access: yesChemistry – A European Journal, EarlyView.
The synthesis and application of pyrazolin‐5‐ylidene NHC chiral‐at‐ruthenium catalysts is reported. The strong donating pyrazolin‐5‐ylidene ligands led to highly electron rich ruthenium complexes, which showed excellent catalytic activity and enantioselectivity in the intramolecular aziridination of an alkene.
Felix Möller   +6 more
wiley   +1 more source

Synthesis and Structures of Novel Chiral Cyclic Hypervalent Iodine(III) Reagents for Metal‐Free Ligand‐Transfer Reactions

open access: yesChemistry – A European Journal, EarlyView.
Several new chiral cyclic hypervalent iodine(III) reagents have been synthesized and characterized. Carbon‐based ligands were successfully installed onto the hypervalent iodine centers, giving thus access to novel chiral cyano‐, trifluoromethyl‐ or alkynyl‐bearing λ3‐iodanes.
Emmanuel Valzer   +4 more
wiley   +1 more source

Afforestation does not increase the temperature sensitivity of soil organic carbon decomposition in the water-level fluctuation zone. [PDF]

open access: yesFront Plant Sci
Lei Y   +11 more
europepmc   +1 more source

Lability of dissolved organic carbon in Arctic rivers on the North Slope of Alaska

open access: yes, 2007
Rivers are an important pathway of organic carbon-mobilization in the arctic, and their influence is projected to grow as precipitation and soil temperatures increase in response to highlatitude warming. This study addresses the bioactivity of arctic riverine dissolved organic carbon (DOC) in three North Slope Alaskan rivers: the Kuparuk, the Colville,
openaire   +1 more source

Benzo[c][1,2,5]Thiadiazole Linkers Enhance the Effectiveness of Cavity‐Containing Supramolecular Photocatalysts

open access: yesChemistry – A European Journal, EarlyView.
Seven novel supramolecular photosensitizers based on benzo[c][1,2,5]thiadiazole (BTZ) tethered to calix[4]arene (C[4]) scaffolds are reported with facile, scalable, and selective syntheses. Their abilities to produce singlet oxygen have been tested through the photo‐oxidation of α‐terpinene.
Leonardo Amicosante   +6 more
wiley   +1 more source

A Stable Isopterin Mimic of a Potent Bacterial Stimulant of T Cells

open access: yesChemistry – A European Journal, EarlyView.
A microbial metabolite covalently binds immunological protein MR1 to potently activate specific lymphocytes called MAIT cells, but it is too unstable for biological applications. Here, using synthesis, assays, protein crystallography, and computer modelling, we report a water‐stable analogue that activates reporter cells expressing the MAIT T cell ...
Jeffrey Y. W. Mak   +9 more
wiley   +1 more source

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