Results 11 to 20 of about 3,012,654 (221)

Preparation of Antimicrobial Nitrogen Heterocycles Using Sustainable Processes

Proceedings, 2017
Libraries of compounds containing heteroaromatic rings and other nitrogen heterocycles were [...]
Concepción C. González, Jorge Juan Cabrera Trujillo, Emy André-Joyaux, Antonio J. Herrera, Nieves R. Paz   +4 more
doaj   +2 more sources

Synthesis of Nitrogen Heterocycles Using Samarium(II) Iodide

Molecules, 2017
Nitrogen heterocycles represent vital structural motifs in biologically-active natural products and pharmaceuticals. As a result, the development of new, convenient and more efficient processes to N-heterocycles is of great interest to synthetic chemists.
Shicheng Shi, Michal Szostak
doaj   +2 more sources

Highly Efficient and Reusable Copper-Catalyzed N-Arylation of Nitrogen-Containing Heterocycles with Aryl Halides

Molecules, 2009
CuO/AB was found to be a simple and efficient catalyst for the N-arylation of a variety of nitrogen-containing heterocycles, giving the products in excellent yields.
Kang Hyun Park, Hyunjoon Song, Hyunju Kang, Haesik Yang, Ji Chan Park, A Young Kim, Hyun Ju Lee   +6 more
doaj   +2 more sources

RETRACTED: Ullah et al. Fluorescent and Phosphorescent Nitrogen-Containing Heterocycles and Crown Ethers: Biological and Pharmaceutical Applications. Molecules 2022, 27, 6631

Molecules
The journal retracts the article titled “Fluorescent and Phosphorescent Nitrogen-Containing Heterocycles and Crown Ethers: Biological and Pharmaceutical Applications” [...]
Faiz Ullah, Sami Ullah, Muhammad Farhan Ali Khan, Muhammad Mustaqeem, Rizwan Nasir Paracha, Muhammad Fayyaz ur Rehman, Fariha Kanwal, Syed Shams ul Hassan, Simona Bungau   +8 more
doaj   +2 more sources

A Greener and Efficient Method for Nucleophilic Aromatic Substitution of Nitrogen-Containing Fused Heterocycles

Molecules, 2018
A simple and efficient methodology for the nucleophilic aromatic substitution of nitrogen-containing fused heterocycles with interesting biological activities has been developed in an environmentally sound manner using polyethylene glycol (PEG-400) as ...
Joana F. Campos, Mohammed Loubidi, Marie-Christine Scherrmann, Sabine Berteina-Raboin   +3 more
doaj   +2 more sources

Monofluorinated Nitrogen Containing Heterocycles: Synthesis, Characterization and Fluorine Effect [PDF]

, 2020
A straight forward synthesis and efficient introduction of fluoromethyl group in nitrogen heterocycles is reported. Starting from the respective NH heterocycles fluoromethylation is performed with fluoroiodomethane and proceeds under mild reaction ...
Reichel, Marco, Konstantin Karaghiosoff, Karaghiosoff, Konstantin, Marco Reichel   +3 more
core   +1 more source

Synthesis of unprotected nitrogen-containing heterocycles via Aza Heck reactions

, 2022
Watson, Donald A.The main objective of this thesis is centered around the identification of novel amide electrophiles for the development of aza-Heck-type reactions.
Shuler, Scott Adam
core   +1 more source

Recent advances in synthesizing and utilizing nitrogen-containing heterocycles

Frontiers in Chemistry, 2023
The use of organocatalysts and a pot economy has strengthened recent organic syntheses. Synthetic methodologies may be applicable in laboratory preparation or in the industrial production of valuable organic compounds. In most cases, synthetic challenges
Hyun-Joon Ha
doaj   +1 more source

Synthesis and Reactivity of 3H-1,2-dithiole-3-thiones

Molecules, 2021
3H-1,2-Dithiole-3-thiones are among the best studied classes of polysulfur-containing heterocycles due to the almost explosive recent interest in these compounds as sources of hydrogen sulfide as an endogenously produced gaseous signaling molecule.
Oleg A. Rakitin
doaj   +1 more source

Synthesis of six membered heterocycles containing nitrogen or oxygen [PDF]

, 2017
Six-membered heterocycles containing nitrogen and oxygen are prevalent in natural products and pharmaceutical drugs; hence efficient synthesis of these motifs is of great benefit.

core   +1 more source