Results 81 to 90 of about 9,914 (265)

Heterostructured Semiconductors for Advanced Chemical and Biochemical Sensors: From Gas Sensors to Electrolyte‐Gated Transistors

Advanced Physics Research, EarlyView.
Heterostructured semiconductors enable synergistic interactions between complementary materials, improving charge transport, analyte adsorption, and signal transduction in chemical and biochemical sensors. Their integration allows for high sensitivity, selectivity, stability, and low‐power operation across gas and liquid‐phase devices, while novel ...
Martin Schwellberger Barbosa, Allyster Rodrigues Silva, Hugo José Nogueira Pedroza Dias Mello   +2 more
wiley   +1 more source

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  

Rhodium-catalyzed enantioselectivedesymmetrizatio of bicyclic hydrazines with alkynilboronic esters

, 2008
The first successful asymmetric transfer of rhodium-alkynyl species to symmetrical strained alkenes has been realized starting from bicyclic hydrazines and alkynylboronic ...
PINESCHI, MAURO, Ferruccio Bertolini, Franco Macchia, S. CROTTI, F. MACCHIA, F. BERTOLINI, Stefano Crotti, Mauro Pineschi   +7 more
core   +1 more source

Glycopolymeric nanoparticles transported by activated platelets protect ischemic myocardium by alleviating PANoptosis through targeting macrophage Dectin‐1

BMEMat, EarlyView.
NP‐SF, designed to target macrophage Dectin‐1 and activated platelets, selectively accumulated in ischemic myocardium, where it was taken up by macrophages after platelet hitchhiking. By inhibiting NLRC5‐related PANoptosis, NP‐SF significantly attenuated pathological damage, and effectively preserved cardiac function in a murine ischemia–reperfusion ...
Guanye Yu, Na Yang, Yan Zhang, Lingxin Peng, Yi Li, Yue Chao, Qinfang Miao, Haikun Qi, Jianhui Zhuang, Weixia Jian, Bingyu Li, Wenhui Peng, Jinghua Chen, Shiyu Gong   +13 more
wiley   +1 more source

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

Synthesis of Hydrazines via Radical Generation and Addition of Azocarboxylic tert-Butyl Esters

, 2018
A new chemistry of azo compounds that is a radical generation and addition in situ of azocarboxylic tert-butyl esters to synthesize hydrazines has been described. The protocol provides a novel strategy for the synthesis of various hydrazines.
Yong-Qiang Wang (1627024), Xue-Qing Zhu (1627030), Ya-Ru Gao (1627027), Chen-Hao Ru (4926499), Shi-Huan Guo (1830961), Gao-Fei Pan (3707605)   +5 more
core   +1 more source

Efficient and Durable Sulfion Oxidation Coupled With Hydrogen Production via Cu@Cu2S Heterostructured Nanowires

Carbon Energy, EarlyView.
We present a facile and liquid‐phase approach to synthesize Cu@Cu2S core‐shell heterostructure nanowires derived from copper nanowires at room temperature for robust sulfide oxidation reaction (SOR)‐assisted H2 generation. The Cu@Cu2S core‐shell heterostructure nanowires exhibit superior SOR activity with an ultralow potential of 0.3 V (vs.
Hongling Zhang, Jiangna Guo, Mengqi Yang, Xingyu Li, Ruixue Weng, Guanyu Liu, Sen Luo, Xiaoyu Dong, Chaowei Ma, Xun Cui, Peng Xiao, Wenjing Yang, Yihuang Chen, Yunhuai Zhang, Ming Zhou   +14 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

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

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