Results 41 to 50 of about 64,062 (284)

Revealing the Ion Chemistry Occurring in High Kinetic Energy-Ion Mobility Spectrometry: A Proof of Principle Study

open access: yesAnalytica, 2023
Here, we present proof of principle studies to demonstrate how the product ions associated with the ion mobility peaks obtained from a High Kinetic Energy-Ion Mobility Spectrometer (HiKE-IMS) measurement of a volatile can be identified using a Proton ...
Florentin Weiss   +4 more
doaj   +1 more source

Ahmad-Strong synthesis of 8-, 9-, and 10-pentadecynoic acids

open access: yesJournal of Lipid Research, 1969
Three pentadecynoic acids, with the triple bond in the 8-, 9-, and 10-positions, have been synthesized on a gram scale in over-all yield of 65% by refinements of the five-step Ahmad-Strong method; isolation of intermediates was shown to be unnecessary ...
David R. Howton, Robert A. Stein
doaj   +1 more source

Development of covalent triazine frameworks as heterogeneous catalytic supports [PDF]

open access: yes, 2019
Covalent triazine frameworks (CTFs) are established as an emerging class of porous organic polymers with remarkable features such as large surface area and permanent porosity, high thermal and chemical stability, and convenient functionalization that ...
Krishnaraj, Chidharth   +3 more
core   +1 more source

Exploring Supramolecular Assembly Space of Cationic 1,2,4-Selenodiazoles: Effect of the Substituent at the Carbon Atom and Anions

open access: yesMolecules, 2022
Chalcogenodiazoles have been intensively studied in recent years in the context of their supramolecular chemistry. In contrast, the newly discovered cationic 1,2,4-selenodiazole supramolecular building blocks, which can be obtained via coupling between 2-
Mariya V. Grudova   +7 more
doaj   +1 more source

The Active Site Sulfenic Acid Ligand in Nitrile Hydratases Can Function as a Nucleophile [PDF]

open access: yes, 2014
Nitrile hydratase (NHase) catalyzes the hydration of nitriles to their corresponding commercially valuable amides at ambient temperatures and physiological pH.
Holz, Richard C.   +4 more
core   +3 more sources

Simple synthesis of pyrrolo[3,2-e]indole-1-carbonitriles

open access: yesBeilstein Journal of Organic Chemistry, 2013
Alkylation of 5-nitroindol-4-ylacetonitriles with ethyl chloroacetate, α-halomethyl ketones, and chloroacetonitrile followed by a treatment of the products with chlorotrimethylsilane in the presence of DBU gives 1-cyanopyrrolo[3,2-e]indoles substituted ...
Adam Trawczyński   +3 more
doaj   +1 more source

An unprecedented palladium-arsenic catalytic cycle for nitriles hydration

open access: yesFrontiers in Chemistry, 2023
An unprecedented palladium/arsenic-based catalytic cycle for the hydration of nitriles to the corresponding amides is here described. It occurs in exceptionally mild conditions such as neutral pH and moderate temperature (60°C).
Damiano Cirri   +2 more
doaj   +1 more source

Effect of ascorbic acid and glutathione on the production of nitriles by myrosinase [PDF]

open access: yes, 2006
Biofumigation is based on the use of glucosinolate-containing plants for the control of soil-borne pest and diseases. Upon tissue damage, glucosinolates are hydrolyzed by endogenous enzymes (myrosinase) and a range of biologically active compounds are ...
Bellostas, Natalia   +2 more
core  

PYCR1 inhibition in bone marrow stromal cells enhances bortezomib sensitivity in multiple myeloma cells by altering their metabolism

open access: yesMolecular Oncology, EarlyView.
This study investigated how PYCR1 inhibition in bone marrow stromal cells (BMSCs) indirectly affects multiple myeloma (MM) cell metabolism and viability. Culturing MM cells in conditioned medium from PYCR1‐silenced BMSCs impaired oxidative phosphorylation and increased sensitivity to bortezomib.
Inge Oudaert   +13 more
wiley   +1 more source

Conversion of Natural Aldehydes from Eucalyptus citriodora, Cymbopogon citratus, and Lippia multiflora into Oximes: GC-MS and FT-IR Analysis †

open access: yesMolecules, 2009
Three carbonyl-containing extracts of essential oils from Eucalyptus citriodora (Myrtaceae), Cymbopogon citratus (Gramineae) and Lippia multiflora (Verbenaceae) were used for the preparation of oximes.
Igor W. Ouédraogo   +4 more
doaj   +1 more source

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