Results 31 to 40 of about 226,914 (312)

New Synthetic Approaches to Multifunctional Phenazinium Salt Derivatives

Molecules, 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

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

, 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, Myriam El Khawand, Colin Murrell, J, Murrell, J. Colin, Daniela Wischer, Antonia Johnston, Chen, Yin; id_orcid, Stephenson, Jason, El Khawand, Myriam, Murrell, J. C. (J. Colin), J Colin Murrell, Hillebrand-Voiculescu, Alexandra M, Hillebrand-Voiculescu, Alexandra M., Deepak Kumaresan, Wischer, Daniela, Chen, Yin, Jason Stephenson, Kumaresan, Deepak, Murrell, J Colin, Johnston, Antonia, Yin Chen   +20 more
core   +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

Química 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

Reactions, 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

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

Техника 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, Anastasia A. Shirshova, Anastasia N. Tikhonova   +2 more
doaj   +1 more source

A Single-Step Synthesis of Azetidine-3-Amines [PDF]

, 2020
The azetidine group is frequently encountered within contemporary medicinal chemistry where it is viewed as a privileged structure. However, the introduction of an azetidine can be synthetically challenging.
Brian J, Wang, Matthew, Duncton
core   +2 more sources

4-Azidocinnoline—Cinnoline-4-amine Pair as a New Fluorogenic and Fluorochromic Environment-Sensitive Probe

Molecules, 2021
A new type of fluorogenic and fluorochromic probe based on the reduction of weakly fluorescent 4-azido-6-(4-cyanophenyl)cinnoline to the corresponding fluorescent cinnoline-4-amine was developed.
Natalia A. Danilkina, Ekaterina V. Andrievskaya, Anna V. Vasileva, Anna G. Lyapunova, Andrey M. Rumyantsev, Andrey A. Kuzmin, Elena A. Bessonova, Irina A. Balova   +7 more
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N-[(1R)-1-(4-Chlorophenyl)ethyl]-Cyanamide

Molbank, 2021
The title compound was synthesized by electrophilic cyanation of commercially available (R)-4-chloro-α-methylbenzylamine with cyanogen bromide in diethyl ether, and isolated as a yellow oil in 84% yield.
Rebeca González-Fernández, Pascale Crochet, Victorio Cadierno   +2 more
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Titanium-Mediated Reduction of Carboxamides to Amines with Borane–Ammonia

Molecules, 2023
In this study, the successful titanium tetrachloride-catalyzed reduction of aldehydes, ketones, carboxylic acids, and nitriles with borane–ammonia was extended to the reduction (deoxygenation) of a variety of aromatic and aliphatic pri-, sec- and tert ...
P. Veeraraghavan Ramachandran, Abdulkhaliq A. Alawaed, Aman Singh   +2 more
doaj   +1 more source

Understanding the multifaceted nature of peptide hydrogels in biomedical research

Academia Materials Science
Hydrogels are networks of three-dimensional cross-linked polymers, which possess the capacity to absorb and retain water. Hydrogels have proven to be adaptable and versatile, making them useful in various biomedical applications such as tissue
Srestha Ghosh, Shinjini Chaudhuri, Subhabrata Guha, Gaurav Das   +3 more
doaj   +1 more source