Results 41 to 50 of about 88,515 (283)

Enhancement of developmental defects in the boron‐deficient maize mutant tassel‐less1 by reduced auxin levels

open access: yesJournal of Plant Nutrition and Soil Science, EarlyView., 2023
Abstract Background Plant responses to deficiencies of the micronutrient boron are diverse and go beyond the well‐characterized function of boron in cell wall crosslinking. To explain these phenotypic discrepancies, hypotheses about interactions of boron with various phytohormones have been proposed, particularly auxin.
Michaela S. Matthes   +3 more
wiley   +1 more source

Harnessing Bifunctional N‐Benzoyloxyamides for Photoredox Amidative Dual Functionalizations of Alkenes

open access: yesAngewandte Chemie, EarlyView.
A novel photocatalytic strategy is presented for intermolecular amidative dual functionalization of alkenes using N‐benzoyloxyamides as bifunctional N─O reagents. The method enables efficient olefin 1,2‐amidooxygenation and significantly extends its reactivity to encompass amidoazidation, diamination, and formal anti‐Markovnikov hydroamidation.
Harin Ryoo   +3 more
wiley   +2 more sources

Ueber Amido- und Nitrobenzoësäuren [PDF]

open access: yesZeitschrift für Analytische Chemie, 1895
n ...
openaire   +2 more sources

Total Synthesis of Feglymycin Using Umpolung Amide Synthesis

open access: yesAngewandte Chemie, EarlyView.
A total synthesis of the antiviral feglymycin is described, leveraging enantioselective umpolung amide synthesis (UmAS). The strategic use of UmAS to prepare the aryl glycine‐rich tridecapeptide reduced hazardous amide coupling agents by 50%, and replaced asymmetric synthesis reliant on toxic transition metals by organocatalysis.
Preston C. Gourville   +10 more
wiley   +2 more sources

Bis[μ-N-(tert-butyldimethylsilyl)quinolin-8-aminato-1:2κ2N1,N8:N8](N,N,N′,N′-tetramethylethane-1,2-diamine-1κ2N,N′)lithiumsodium

open access: yesActa Crystallographica Section E, 2012
In the heterometallic title bulky amido complex, [LiNa(C15H21N2Si)2(C6H16N2)], both alkali metal ions are four-coordinated with distorted tetrahedral geometries. The Li+ ion is N,N′-chelated by the N-silylated amido ligand, with Li—N =
Juan Chen, Li Yuan
doaj   +1 more source

Deciphering of interactions between platinated DNA and HMGB1 by hydrogen/deuterium exchange mass spectrometry [PDF]

open access: yes, 2017
A high mobility group box 1 (HMGB1) protein has been reported to recognize both 1,2-intrastrand crosslinked DNA by cisplatin (1,2-cis-Pt-DNA) and monofunctional platinated DNA using trans-[PtCl2(NH3)(thiazole)] (1-trans-PtTz-DNA).
Du, Zhifeng   +9 more
core   +2 more sources

Transition Metal‐Free Formal C─H/C─H Coupling of Arylacetamides and Sulfoxides: An Interrupted Pummerer/[2,3]‐sigmatropic Rearrangement Sequence

open access: yesAngewandte Chemie, EarlyView.
A two‐step formal C─H/C─H coupling of arylacetamides with sulfoxides proceeds via the formation and rearrangement of little‐known α‐amido sulfonium salts and provides an alternative to transition metal‐catalyzed C─H activation. The protocol is showcased in a short synthesis of a dopamine D1 receptor allosteric modulator.
Shibo Zhang   +5 more
wiley   +2 more sources

Synthesis, Structure, and Dynamics of Tris(η5-cyclopentadienyl)lanthanides and Bis(η5-cyclopentadienyl)[bis(trimethylsilyl)amido]cerium(III) [PDF]

open access: yes, 2006
The crystal structures of tris(η5-cyclopentadienyl)lanthanides (Ln = Ce, Dy, Ho) have been determined using different X-ray diffraction methods. Cp3Ce and Cp3Ho (Cp = cyclopentadienyl) crystal data needed special solution and refinement methods, due to ...
Baisch, Ulrich   +5 more
core   +1 more source

Ueber Amido‐und Urethano‐Tolyloxamsäuren [PDF]

open access: yesJustus Liebigs Annalen der Chemie, 1892
n ...
Schiff, Hugo, Vanni, A.
openaire   +2 more sources

Excited State Modulation in Carbene‐Metal‐Amides to Design Fast and Bright Blue Delayed Fluorescence

open access: yesAdvanced Functional Materials, EarlyView.
Gold‐centered carbene‐metal amide (CMA) materials with carbonyl‐group substitution on the amide donor ligand. Molecular design ensures that the charge transfer (CT) state is lower in energy than the locally excited (3LE) states. The energy difference between CT and LE states controls the rate of the delayed fluorescence.
Charlotte Riley   +3 more
wiley   +1 more source

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