Results 31 to 40 of about 922,646 (221)

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

open access: yes, 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

A sustainable thermochemical conversion of animal biomass to N-heterocycles

open access: yesJournal of Leather Science and Engineering, 2023
The production of high-valued organonitrogen chemicals, especially N-heterocycles, requires artificial N2 fixation accompanied by the consumption of fossil resources.
Yang Tang   +5 more
doaj   +1 more source

Synthesis of α-Trifluoromethylated Nitrogen Heterocycles

open access: yes, 2016
The syntheses of various α-trifluoromethylated nitrogen heterocycles have been achieved from readily available α-(trifluoromethyl)homoallylamine through a ring-closing ...
Ségolène Gille (3035658)   +3 more
core   +1 more source

A Holistic Platform Approach for Developing Robust Pulmonary mRNA Delivery: Integrating Novel Phenolic Acid‐Derived Ionizable Lipids and Device Engineering

open access: yesAdvanced Functional Materials, EarlyView.
An integrated pulmonary mRNA delivery platform combining novel biodegradable syringic acid‐derived ionizable lipids, design‐of‐experiments formulation optimization, and vibrating‐mesh nebulizer engineering enabled stable aerosolization and efficient lung delivery.
Neha Kaushal   +21 more
wiley   +1 more source

Alkylene-functionality in bridged and fused nitrogen-rich poly-cyclic energetic materials: Synthesis, structural diversity and energetic properties

open access: yesDefence Technology
From the standpoint of chemical structures, the organic backbones of energetic materials can be classified into aromatic rings, nonaromatic rings, and open chains.
Man Xu   +4 more
doaj   +1 more source

Accessing Biologically Important Imines and Nitrogen Heterocycles Using an Organocatalyst

open access: yes, 2022
Nitrogen-containing heterocycles play a prominent role in a variety of biological systems and drug-like molecules. Imines play an important role in the formation of these heterocycles and commercially available starting materials include alcohols and ...
Lewis, Stephonda G.
core  

Stabilization of Strongly Reduced Fe(I) Single Atom Species Coordinated in a 2D Self‐Assembled Metal–Organic Network

open access: yesAdvanced Functional Materials, EarlyView.
A graphene‐supported 2D metal–organic network stabilizes highly reactive Fe(I)‐N4 single sites through Co‐induced charge redistribution. Combined experiments and theory reveal Fe(I) formation, oxygen‐driven oxidation, and O2 activation mechanisms, offering a strategy to access low‐valent iron centers relevant to catalytic and biological processes ...
Alessandro Namar   +9 more
wiley   +1 more source

Synthesis of Oxadiazole Derivatives from Terephthalic Acid

open access: yesChemistry Proceedings
Oxadiazoles, nitrogen-containing heterocycles, are attracting interest due to their promising biological activities. This study focuses on the synthesis of oxadiazole derivatives from functionalized intermediates derived from terephthalic acid, a ...
Fekih Yasmine   +2 more
doaj   +1 more source

Synthesis of unprotected nitrogen-containing heterocycles via Aza Heck reactions

open access: yes, 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

Ionic Cocrystal Programming of Spatial Ionic Organization in Carbon Nitrides Enables Highly Efficient H2O2 Photosynthesis

open access: yesAdvanced Materials, EarlyView.
Ionic cocrystal‐programmed ionic organization establishes a general strategy for electrostatic programming in polymeric photocatalysts. ABSTRACT Controlling the spatial organization of ions in polymeric photocatalysts remains a fundamental challenge for optimizing charge transport and catalytic selectivity in solar‐driven hydrogen peroxide (H2O2 ...
Anna Lo Presti   +6 more
wiley   +1 more source

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