Results 91 to 100 of about 13,633 (275)

On the reactivity of triphenylphosphoranylidenesuccinic anhydride with nitrogen nucleophiles: a new synthetic route to nitrogen-containing phosphonium salts

Journal of the Brazilian Chemical Society, 2000
The reactions of triphenylphosphoranylidenesuccinic anhydride with amines, hydrazines and dipolar nitrogen nucleophiles were investigated, and a new method of synthesis of phosphonioum salts containing the fragment RNHC(C=O)CH2CH2PPh3 is described.
Cunha Silvio, Kascheres Albert
doaj  

Unexpected Reduction of Ethyl 3-Phenylquinoxaline-2- carboxylate 1,4-Di-N-oxide Derivatives by Amines

Molecules, 2008
The unexpected tendency of amines and functionalized hydrazines to reduceethyl 3-phenylquinoxaline-2-carboxylate 1,4-di-N-oxide (1) to afford a quinoxaline 1c andmono-oxide quinoxalines 1a and 1b is described. The experimental conditions werestandardized
Antonio Monge, Ignacio Aldana, Silvia Pérez-Silanes, Beatriz Solano, Esther Vicente, Lidia M. Lima   +5 more
doaj   +1 more source

hydrazines

, 2014
Citation: 'hydrazines' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.H02881 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Biomaterial design strategies for enhancing mitochondrial transplantation therapy

BMEMat, EarlyView.
Biomaterials to facilitate mitochondrial transplantation therapy: biomaterials as barriers to protect mitochondria from pathophysiological microenvironments, like osmotic stress caused by the excessive concentration of calcium ion, reactive oxygen species, and advanced glycation end products; biomaterials integrating with biochemical cues to improve ...
Shaoyang Kang, Yushan Zhang, Hang Li, Sirui Peng, Donghao Lyu, Chunxiao Zhou, Sheng Ding, Zujian Feng, Pingsheng Huang, Chuangnian Zhang, Hongjun Wang, Deling Kong, Weiwei Wang   +12 more
wiley   +1 more source

Regioselective hydroamination of unactivated olefins with diazirines as a diversifiable nitrogen source

Nature Communications
Nitrogen-containing compounds, such as amines, hydrazines, and heterocycles, play an indispensable role in medicine, agriculture, and materials. Alkylated derivatives of these compounds, especially in sterically congested environments, remain a challenge
Qingyu Xing, Preeti P. Chandrachud, Khalilia Tillett, Justin M. Lopchuk   +3 more
doaj   +1 more source

A convenient four-component one-pot strategy toward the synthesis of pyrazolo[3,4-d]pyrimidines

Beilstein Journal of Organic Chemistry, 2015
An efficient one-pot synthesis of pyrazolo[3,4-d]pyrimidine derivatives by the four-component condensation of hydrazines, methylenemalononitriles, aldehydes and alcohols has been developed via two different reaction pathways.
Mingxing Liu, Jiarong Li, Hongxin Chai, Kai Zhang, Deli Yang, Qi Zhang, Daxin Shi   +6 more
doaj   +1 more source

Carrier‐free self‐assembled nanomedicine for combination‐therapy of acute myeloid leukemia

BMEMat, EarlyView.
CPDS combines drugs with three different mechanisms of action to achieve a multi‐mechanism combination therapy for AML by directly killing tumor cells and activating anti‐tumor immunity. Abstract As the main acute myeloid leukemia (AML) clinical treatment, the chemotherapy alone cannot meet the clinical therapeutic needs due to the high heterogeneity ...
Meihong Chai, Rui Zhang, Haiyin Yang, Jiyue Xing, Tianyuan Hu, Mengxi Zhu, Rui Li, Xiaoli Chen, Beibei Zhao, Yang Lan, Stefan Barth, Yuanyu Huang, Li Zhang, Mengjie Zhang, Huining He   +14 more
wiley   +1 more source

FLUOROUS SUPPORTED SYNTHESIS OF PYRAZOLONE DERIVATIVES FROM ALLYLIC ALCOHOLS USING A PALLADIUM-CATALYZED STRATEGY

Química Nova
Ten substituted pyrazolone derivatives were easily synthesized from perfluorinated allylic alcohols, via a straightforward two steps reaction involving a Heck-coupling/isomerization reaction and subsequent condensation of hydrazines.
Nicolas Gouault, Alexandre Cariou, Jean-François Cupif, Patrícia de Aguiar Amaral, Michèle David   +4 more
doaj   +1 more source

Chemistry of the Enaminone of 1-Acetylnaphthalene under Microwave Irradiation Using Chitosan as a Green Catalyst

Molecules, 2011
Enaminone 1 was reacted with hydrazonoyl halides 2a-d to yield 3,4-disubstituted pyrazoles 6a-d. Coupling with arenediazonium chlorides afforded the 2-(arylhydrazono)-3-(1-naphthalenyl)-3-oxopropionaldehydes 13a-c.
Huwaida M. E. Hassaneen
doaj   +1 more source

Selective Oxidation Strategies for Cost‐Efficient Green Hydrogen Production via Hybrid Water Electrolysis

Carbon Energy, EarlyView.
Hybrid water electrolysis has emerged as a promising alternative to conventional electrolysis for sustainable hydrogen production. The economic potential of replacing water oxidation with organic substrates is assessed. For each substrate, representative electrocatalysts and mechanistic insights are reviewed to identify design principles for optimized ...
Conor Brennan‐Pollak, Lua Henderson, Cian Clarke, Maida A. Costa de Oliveira, Dídac A. Fenoll, Sreedhanya Pallilavalappil, Aswathy Babu, Shaista Jabeen, Pranav K. Gangadharan, Huabin Zhang, Suresh C. Pillai, Paula E. Colavita, Max García‐Melchor   +12 more
wiley   +1 more source