Results 101 to 110 of about 214,608 (288)

General and selective ruthenium-catalyzed hydrogenation of primary amides to primary amines under mild conditions

open access: yesNature Communications
The catalytic hydrogenation of amides continues to be one of the most difficult reductive transformations in organic synthesis. Despite significant efforts in past decades, there is no general protocol reported allowing the synthesis of various primary ...
Chakreshwara Kuloor   +9 more
doaj   +1 more source

An efficient and chemoselective Cbz-protection of amines using silica–sulfuric acid at room temperature

open access: yes, 2007
A simple, facile, and chemoselective N-benzyloxycarbonylation of amines using silica–sulfuric acid that proceeds under solvent-free conditions at room temperature has been achieved.
Polshettiwar, Vivek   +3 more
core   +1 more source

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

Analysis of heterocyclic aromatic amines in human breast milk

open access: yes, 2009
This thesis describes a new solid phase extraction procedure that was developed for the detection of 2-amino-1-methyl-6-phenylimidazo[4,5-' b']pyridine (PhIP) and other heterocyclic aromatic amines in human breast milk. Analysis was carried out with high-
Scott, Kara Anne
core   +1 more source

Photocatalytic N-Formylation of CO2 with Amines Catalyzed by Diethyltriamine Pentaacetic Acid

open access: yesC
In the present work, inexpensive and commercially available diethyltriamine pentaacetic acid (DTPA) was used as an initiator to catalyze the N-formylation reaction of CO2 with amines via the construction of C-N bonds in the presence of xanthone as the ...
Xuexin Yuan   +6 more
doaj   +1 more source

Inhibition of the CYP Enzymatic System Responsible of Heterocyclic Amines Bioactivation by an Asclepias subulata Extract. [PDF]

open access: yesPlants (Basel), 2023
Gutiérrez-Pacheco SL   +7 more
europepmc   +1 more source

Modulation of Epigenetic Control by Advanced Molecular Tweezers

open access: yesChemistry – A European Journal, EarlyView.
Tailored dimeric molecular tweezers recognize the DNA‐binding part of Histone H4 and interrupt the essential histone‐DNA interaction. ABSTRACT This work addresses the question if supramolecular systems can be tailored to interfere with posttranslational modifications (PTM) and epigenetics.
My‐Hue‐Le   +9 more
wiley   +1 more source

Hydrogen Release From Silicon─Hydrogen Systems: From Surface Chemistry to Higher‐Coordinate Molecular Mechanisms

open access: yesChemistry – A European Journal, EarlyView.
Hydrogen‐release processes in silicon chemistry occur across a broad spectrum of systems, including crystalline silicon surfaces, nanoporous materials, Zintl phases, and molecular hydrides. This Review highlights how Si─H activation and H2 evolution are governed by structure, coordination environment, and dynamic access to reactive geometries, with ...
Robin Rothfelder, Jonathan O. Bauer
wiley   +1 more source

Cyclization of microbiologically active 4-(furan-2-yl)-1-(pyridine-4-yl)-azetidine-2-one derivatives

open access: yesInternational Journal of Research in Pharmaceutical Sciences, 2011
The present work involved cyclization of imines by reaction with chloro-methylene chloride using 1, 4-dioxane as solvent (2a&2b). The imines were formed by reaction with furan-2-carboxyldehyde and various substituted heterocyclic amines (1a&1b).
Sandip Sen   +4 more
doaj  

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