Results 51 to 60 of about 66,186 (324)

Predictive, Data‐Driven Design of Red‐Light Photoredox Catalysts for C─Heteroatom Bond Formation

Angewandte Chemie, EarlyView.
From redox numbers to red light: Donor oxidation and core reduction potentials predict E0‐0 in cyanoarene dyes, guiding selection of an efficient red‐light catalyst, 4MeODPATPN (PC13). Under 620 nm light, PC13 facilitates Ni‐catalyzed C─heteroatom cross‐couplings (C─N, C─O, C─S) with high functional‐group tolerance and reduced hydrodehalogenation ...
Amir Gizatullin, Tingting Yuan, Sascha Grotjahn, Luigi Cavallo, Burkhard König, Chen Zhu, Magnus Rueping   +6 more
wiley   +2 more sources

Synthesis and Characterization of Group-6 Metal Carbonyl Complexes of Aroyl Hydrazone Derivatives

E-Journal of Chemistry, 2012
Carbonyl complexes of Chromium, molybdenum and tungsten of composition, [M(CO)4L-L], (where M= Cr, Mo or W and L-L= benzoic acid[1-(Furan-2-yl)methylene]hydrazide (BFMH), benzoic acid[(thiophene-2-yl)methylene]hydrazide (BTMH), benzoic acid[1-(thiophene ...
Mohd Saleem, Mohita Sharma, Simpy Mahajan, H. N. Sheikh, B. L. Kalsotra   +4 more
doaj   +1 more source

Synthesis, Antiproliferative Activity and Molecular Properties Predictions of Galloyl Derivatives

Molecules, 2015
The present study was designed to investigate the in vitro antiproliferative activity against ten human cancer cell lines of a series of galloyl derivatives bearing substituted-1,3,4-oxadiazole and carbohydrazide moieties.
Marciane Maximo da Silva, Marina Comin, Thiago Santos Duarte, Mary Ann Foglio, João Ernesto de Carvalho, Maria do Carmo Vieira, Anelise Samara Nazari Formagio   +6 more
doaj   +1 more source

Arylhydrazines: Convenient Homogeneous Reductants for Scalable Cross‐Coupling

Angewandte Chemie, EarlyView.
Reductive cross‐couplings enable efficient C–C bond formation but are limited by the heterogeneity of Zn or costly reagents like TDAE. We report arylhydrazines as inexpensive, convenient reductants for Ni‐catalyzed sp2–sp3 coupling of aryl halides and secondary alkyl iodides. Mechanistic studies support hydrazine‐mediated NiII reduction for a NiI/NiIII
Nils Kurig, David A. Cagan, Kaid C. Harper, Yu Kawamata, Donna G. Blackmond, Phil S. Baran   +5 more
wiley   +2 more sources

Chemical Modification of Pectin and Polygalacturonic Acid: A Critical Review

BioResources, 2021
Pectin, as a sustainable biopolymer with its two complementary functionalities (carboxyl and hydroxyl moieties) imparted in the α-1,4-galacturonic acid repeating unit, has gained increasing attention in the last few years.
Hendryk Würfel, Katja Geitel, Haisong Qi, Thomas Heinze   +3 more
doaj   +1 more source

Cyclo dehydration reaction of polyhydrazides. II. Kinetic parameters obtained from isothermal thermogravimetry [PDF]

, 1988
The kinetics of the thermal conversion reaction of poly-(1,3-phenyl-1,4-phenyl)-hydrazide into poly-(1,3-phenyl-1,4-phenyl)-1,3,4-oxadiazole have been studied with isothermal thermogravimetry in continuation of a study with nonisothermal thermogravimetry
Gebben, B., Mulder, M.H.V., Smolders, C.A.   +2 more
core   +2 more sources

Microenvironment Modulation‐Based Nanomaterial‐Loaded Hydrogel Dressings for Diabetic Foot Ulcers: Research Progress and Future Perspectives

Advanced Materials Interfaces, EarlyView.
xx xx. ABSTRACT Diabetic foot ulcer (DFU) is a chronic complication of diabetes, primarily caused by hyperglycemia, peripheral vascular disease, and neuropathy. Characterized by persistent hyperglycemia, impaired perfusion, inflammation, and infection, DFUs pose significant challenges to healing and are associated with high morbidity and amputation ...
Tang Yuqing, Chen Hong, Fan Weijing, Huang Renyan, You Yang, Liu Guobin   +5 more
wiley   +1 more source

Bimetallic Peroxide Nanocomposites‐Driven Redox Dyshomeostasis to Activate Sequential Cuproptosis and Pyroptosis for Amplified Tumor Immunotherapy

Advanced Science, EarlyView.
Hyaluronic acid‐modified bimetallic peroxide nanocomposites (MgO2‐CuO2@HA) are designed for synergistic tumor therapy. The nanocomposites release Mg2+, H2O2, and Cu2+ in tumor cells, induce cuproptosis via Cu+‐mediated protein aggregation, and activate pyroptosis through caspase‐1/gasdermin D pathways for inducing immunogenic cell death, collectively ...
Guanting He, Haixia Zhu, Peipei Kang, Lili Feng, Chenghao Yu, Yanlin Zhu, Bin Liu, Zhengxiao Guo, Piaoping Yang   +8 more
wiley   +1 more source

Determination of maleic hydrazide residues in onion [PDF]

Ratarstvo i Povrtarstvo, 2010
A simple HPLC determination method of maleic hydrazide residues in onions was introduced. The homogenized onion samples were extracted with methanol. The crude ex- tract was purified on SPE SampliQ SCX column.
Bursić Vojislava, Lazić Sanja, Šunjka Dragana, Ilić Zoran, Vuković Slavica   +4 more
doaj  

2-{3-[2-(2-Chlorophenyl)ethyl]-2-oxo-1,2-dihydroquinoxalin-1-yl}acetohydrazide

IUCrData, 2017
In the title compound, C18H17ClN4O2, the dihydroquinoxaline moiety deviates slightly from planarity. The benzene ring and its chloro and methylene substituents are disordered over two sets of sites, with an occupancy ratio of 0.675 (3):0.325 (3).
Youssef Ramli, Mohcine Missioui, Mohammed El Fal, Mohammed Ouhcine, El Mokhtar Essassi, Joel T Mague   +5 more
doaj   +1 more source