Results 41 to 50 of about 3,594 (226)

Ein neues Dibrom‐phenanthren. Bromierung des Phenanthrens in Eisessig [PDF]

Berichte der deutschen chemischen Gesellschaft, 1915
n ...
openaire   +1 more source

Ambident Reactivity in the Phenyl + NO Radical Recombination

Chemistry – A European Journal, EarlyView.
ABSTRACT The recombination reaction of nitric oxide (NO) with radicals via its oxygen atom, rather than the more common nitrogen site, offers an intriguing pathway to the formation of oxynitrenes. The photochemical isomerization of nitroso compounds into their corresponding oxynitrenes may involve such a step.
Virinder Bhagat, Adrián Portela‐González, André K. Eckhardt, J. Philipp Wagner   +3 more
wiley   +1 more source

Identification of Two New Phenanthrenes from Dendrobii Herba and Their Cytotoxicity towards Human Hypopharynx Squamous Carcinoma Cell (FaDu)

Molecules, 2019
Two new phenanthrenes, (1R,2R)-1,7-hydroxy-2,8-methoxy-2,3-dihydrophenanthrene-4(1H)-one (1) and 2,7-dihydroxy-phenanthrene-1,4-dione (2), were isolated from the ethyl acetate-soluble fraction of Dendrobii Herba, together with seven known phenanthrenes ...
Bomi Nam, Seung Mok Ryu, Dongho Lee, Chan-Hun Jung, Chang Hyun Jin, Jin-Baek Kim, Ik-Soo Lee, Ah-Reum Han   +7 more
doaj   +1 more source

Preparation of Phenanthrenes by Photocyclization of Stilbenes Containing a Tosyl Group on the Central Double Bond. A Versatile Approach to the Synthesis of Phenanthrenes and Phenanthrenoids

, 2016
We have developed a useful modification of the classical preparation of phenanthrenes by UV irradiation of stilbenes in the presence of an oxidant. This modification involves the irradiation, in the presence of base, of stilbenes possessing a sulfonyl ...
Jesús F. Almeida (2258959), Victor Romero (2258968), Antonio Pérez (2258965), Ana G. Neo (2010589), José Delamano (2258953), Luis Castedo (2170876), Carmen López (2258956), Gabriel Tojo (2258950), Berta Antelo (2258971), Dolores Fernández (2258962)   +9 more
core   +1 more source

Carbon Dots for Cancer Theranostics: Synthesis Strategies, Luminescence Properties, and Advances in Bioimaging‐Guided Diagnosis and Therapy

Chemistry – A European Journal, EarlyView.
Lighting up the path to precision oncology: This review comprehensively summarizes the rational design of carbon dots (CDs), elucidating how core size, surface chemistry, and heteroatom doping dictate their luminescence mechanisms. Special emphasis is placed on engineering NIR‐II emissive CDs for deep‐tissue imaging.
Zekun Yan, Yupeng Liu, Jinyun Tan, Songnan Qu   +3 more
wiley   +1 more source

Aromatic compounds in bitumoids of the Bazhenov Formation in the North of the Khantey hemiantheclise

Georesursy
The main features of the geochemistry of individual aromatic compounds (phenanthrenes, dibenzothiophenes, monoand triaromatic steroids) in chloroform extracts (bitumoids) from the open (regular form and coarse-crushed (≥0.5 cm) samples) and closed (fine ...
I. S. Sotnich, E. A. Kostyreva
doaj   +1 more source

Phenanthrenes in Chinese Yam Peel Exhibit Anti-inflammatory Activity, as Shown by Strong Cyclooxygenase Enzyme Inhibition

Natural Product Communications, 2016
Chinese yam ( Dioscorea opposita ), peeled or whole, is a popular food item that is considered to be healthy. Often, the yam is peeled before cooking. However, it is also consumed with peel.
Qian Li, Chuan-Rui Zhang, Amila A. Dissanayake, Qun-yu Gao, Muraleedharan G. Nair   +4 more
doaj   +1 more source

Iron-catalyzed synthesis of phenanthrenes via intramolecular hydroarylation of arene-alkynes

Journal of Saudi Chemical Society, 2019
An Fe(OTf)3-catalyzed intramolecular hydroarylation of arene-alkynes with high functional group tolerance has been reported, affording a series of phenanthrene derivatives efficiently. A low catalytic amount of Fe(OTf)3 is applied in this reaction.
Yang Li, Yawei Li, Xiao Hu, Guangxing Pan, Wangsheng Liu, Yaopeng Zhang, Hao Guo   +6 more
doaj   +1 more source

VII.—On α- and β-phenanthrene-carboxylic acids, with remarks on the constitution of phenanthrene [PDF]

J. Chem. Soc., Trans., 1880
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openaire   +2 more sources

A Bio‐Based Chiroptical Overcrowded Alkene From Flavanone: Photoreactivity and Theoretical Investigation

Chemistry – A European Journal, EarlyView.
A sustainable route to photoresponsive molecular systems is achieved using the bio‐based flavanone (‐)‐isolonchocarpin from Tephrosia vogelii. Through McMurry homocoupling and light‐driven 6‐π‐electrocyclization, an overcrowded alkene and a fluorescent O‐heterocyclic phenanthrene are synthesized.
Deryl H. Limawan, Adrien Combe, Anthony Bongso, Bayu Dwiputra, Atthar L. Ivansyah, Roza R. Weber, Charlotte N. Stindt, Robby Roswanda, Ben L. Feringa   +8 more
wiley   +1 more source