Results 31 to 40 of about 871,548 (248)

Microorganisms in Chemistry of Nitrogenous Heterocycles [PDF]

, 2017
The monograph is devoted to microbiological methods of obtaining organic compounds from a series of nitrogenous heterocycles (azaarenes, quinolones and saturated nitrogenous heterocycles). It is proposed alternative ways of synthesizing compounds that are difficult to obtain using conventional methods of organic chemistry.
openaire   +2 more sources

Nitrogen heterocycles as potential monoamine oxidase inhibitors: Synthetic aspects [PDF]

, 2014
The present review highlights the synthetic methods of monoamine oxidase inhibitors (MAO) belonging to a group of nitrogen heterocycles such as pyrazoline, indole, xanthine, oxadiazole, benzimidazole, pyrrole, quinoxaline, thiazole and other related ...
Patil, Pravin O., Pravin O. Patil, Bari, Sanjay B., Sanjay B. Bari   +3 more
core   +1 more source

A sustainable thermochemical conversion of animal biomass to N-heterocycles

Journal 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, Xiao Xiao, Chaojun Zhang, Xiaoling Wang, Junling Guo, Xuepin Liao   +5 more
doaj   +1 more source

Enantioselective Access to Trifluoromethylated Spirocyclopropyl Heterocycles. [PDF]

Adv Sci (Weinh)
We report a rhodium‐catalyzed asymmetric [2+1] spirocyclopropanation of methylene azacycles with trifluoromethyl carbenes in situ derived from fluoroalkyl triftosylhydrazones. ABSTRACT Chiral spirocyclopropyl heterocycles have emerged as privileged three‐dimensional structural motifs in medicinal chemistry.
Zhu Y, Xu Y, Zhang W, Ning Y, Jiang Y, Ning Y, Huang G, Cheng J, Sivaguru P, Bi X.   +9 more
europepmc   +2 more sources

Tetracyclic π‐Extended Multi‐Resonant TADF Emitters for Green PSF‐OLEDs With 37.7% EQE and BT.2020‐Compatible Top‐Emitting Devices

Advanced Functional Materials, EarlyView.
Ultra‐narrow green multi‐resonance thermally activated delayed fluorescence emitters have been developed by linear π‐extension strategy using tetracyclic naphtho[2,3‐b]benzofuran unit. The resulting phosphorescence‐sensitized OLEDs achieve a maximum external quantum efficiency of 37.7% in the bottom‐emitting architecture, while the complementary top ...
Eo Jin Jeon, Truong Thi Thuy, Nikita Abitkar, Paramasivam Palanisamy, Jiheon Kim, Myungsun Sim, Athithan Maheshwaran, Jang Hyuk Kwon   +7 more
wiley   +1 more source

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

Defence 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, Nanxi Xiang, Ping Yin, Qi Lai, Siping Pang   +4 more
doaj   +1 more source

Radical Cyclization of Ynamides to Nitrogen Heterocycles

, 2022
An efficient radical cyclization of suitably functionalized ynamides to nitrogen-containing heterocycles is reported. Upon reaction with tributyltin hydride in the presence of catalytic amounts of AIBN in toluene at 80 °C, a range of ynamides bearing a N-
Blanchard, Nicolas, Zhang, Chunyang, Evano, Gwilherm   +2 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

Advanced 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, Younan Ma, Asad Khanmohammed, Dipen Parande, Hanming Zhang, Saket Dolare, Juliet Chen, Apiwat Wangweerawong, Saswata Karmakar, Hongfeng Deng, Frank Koppenhagen, Shraddha Sharma, Eric Reyes, Sherry He, Lianne Boeglin, Caroline Woo, Azadeh Paksa, Ayed Allawzi, Anusha Dias, Gregory Troiano, Shrirang Karve, Frank DeRosa   +21 more
wiley   +1 more source

Synthesis of Oxadiazole Derivatives from Terephthalic Acid

Chemistry 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, Datoussaid Yazid, Choukchou-Braham Noureddine   +2 more
doaj   +1 more source

Photo‐Switchable Molecular Module Programming PET Biodegradation in Aquatic Environments

Advanced Functional Materials, EarlyView.
We address the plastic durability paradox by integrating an itaconic acid–derived pyrrolidone module into polymer backbones. Sunlight in water triggers Norrish Type I ring‐opening and hydrophilization, enabling rapid biodegradation into nontoxic minerals.
Mohammad Asif Ali, Jixin Zheng, Satoshi Wakai, Jie Liu, Hidetaka Nomaki, Misato Tsukatani, Noriyuki Isobe, Jingcheng Sang, Yuriko Aoki, Hideo Okamura, Daisuke Sasaki, Chiaki Ogino, Yuzo Yamazaki, Takashi Nishikaze, Kenji Takada, Maiko K. Okajima, Tatsuo Kaneko   +16 more
wiley   +1 more source