Results 21 to 30 of about 196,786 (315)

Benzamidomethylation with (Benzamidomethyl)triethylammonium Chloride. 2. A Simple Method for Benzamidomethylation of Thiols, Amines and Carboxylic Acids

open access: yesMolecules, 2000
Thiols and amines were benzamidomethylated in water solution at room temperature with (benzamidomethyl)triethylammonium chloride (1) in the presence of a small quantity of triethylamine (pH>9).
Emil Popovski   +2 more
doaj   +1 more source

Michael addition of aromatic and aliphatic amines to unsaturated olefines in the presence of TMSCl under solvent free conditions [PDF]

open access: yesشیمی کاربردی روز, 2008
An operationally simple and highly fast protocol for TMSCl (10 mol%) catalyzed conjugate addition of aromatic and aliphatic amines derivatives to unsaturated carbonyl compounds in good to excellent yields has been developed.
Najmadin Azizi
doaj   +1 more source

Electrochemical Synthesis of Allylic Amines from Alkenes and Amines

open access: yes, 2021
Allylic amines are valuable synthetic targets en route to diverse biologically active amine products. Current allylic C–H amination strate-gies remain limited with respect to the viable N-substituents.
Zachary, Wickens   +2 more
core   +1 more source

New Synthetic Approaches to Multifunctional Phenazinium Salt Derivatives

open access: yesMolecules, 2003
Two different approaches are offered for the synthesis under mild conditions of disubstituted phenazinium and benzo[a]phenazinium salts. Direct nucleophilic substitutions by primary and secondary amines in quaternary phenazinium salts containing an ...
Vladimir N. Silnikov, Inna Yu. Garipova
doaj   +1 more source

Hydrothermal Water Enabling One-Pot Transformation of Amines to Alcohols

open access: yes, 2021
While the amination of primary alcohols to amines is quite normal, the reverse reaction, deamination of amines to alcohols is rare. Recent advances achieve the transformation by catalytic multistep processes. We report a one-pot method that enables water
Jiong, Cheng   +3 more
core   +1 more source

Fluorinated Amine Stereotriads via Allene Amination [PDF]

open access: yesOrganic Letters, 2017
The incorporation of fluorine into organic scaffolds often improves the bioactivity of pharmaceutically relevant compounds. C-F/C-N/C-O stereotriad motifs are prevalent in antivirals, neuraminidase inhibitors, and modulators of androgen receptors, but are challenging to install.
Lu Liu   +4 more
openaire   +2 more sources

Influence of Alcoholic and Malolactic Fermentation on the Level of Biogenic Amines in Wine [PDF]

open access: yesТехника и технология пищевых производств, 2021
Introduction. The concentration of biogenic amines is an important indicator of the safety of food products, especially winemaking. In grape wines, this concentration varies widely depending on the grape variety, its microbiological state, processing ...
Natalia M. Ageyeva   +2 more
doaj   +1 more source

Reações de organocatálise com aminas quirais: aspectos mecanísticos e aplicações em síntese orgânica Organocatalysis reactions with chiral amines: mechanistic aspects and use on organic synthesis

open access: yesQuímica Nova, 2009
The philosophy of organocatalysis is based on the utilization of organic compounds to catalyze organic transformations without the intervention of metals.
Giovanni W. Amarante, Fernando Coelho
doaj   +1 more source

One-Pot Reactions of Triethyl Orthoformate with Amines

open access: yesReactions, 2023
One-pot reactions offer advantages like easy automation, higher product yields, minimal waste generation, operational simplicity, and thus reduced cost, time and energy.
Elina Marinho
doaj   +1 more source

Bacterial metabolism of methylated amines and identification of novel methylotrophs in Movile Cave [PDF]

open access: yes, 2015
Movile Cave, Romania, is an unusual underground ecosystem that has been sealed off from the outside world for several million years and is sustained by non-phototrophic carbon fixation. Methane and sulfur-oxidising bacteria are the main primary producers,
Alexandra M Hillebrand-Voiculescu   +20 more
core   +1 more source

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