نتایج جستجو برای: anthracene derivatives

تعداد نتایج: 108664  

Journal: :Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology 2010
Arun Kumar Sundaresan Steffen Jockusch Yongjun Li Jeffrey R Lancaster Steven Banik Paul Zimmerman James M Blackwell Robert Bristol Nicholas J Turro

The cycloadducts of tethered naphthalene and anthracene derivatives undergo photochemical ring opening to an electronically excited product with adiabatic yields up to 90%.

Journal: :Organic & biomolecular chemistry 2009
Kuang-Po Chen Hen-Qun Lee Yu-Chih Cheng Che-Ping Chuang

A manganese(III)-mediated reaction between 2-benzoyl-1,4-benzoquinones and 1,3-dicarbonyl compounds that produces benzo[c]furan-4,7-diones and anthracene-1,4-diones with high chemoselectivity is described. With ethyl butyrylacetate, by changing the solvent, benzo[c]furan-4,7-diones and anthracene-1,4-diones can be generated in high chemoselectivities. With ethyl benzoylacetate, N ,N-dimethyl ac...

Novel analogues of N-piperazinyl fluoroquinolones were prepared and evaluated against a panel of Gram-positive and Gram-negative bacteria, to study the effect of introducing bulky anthracene and phenanthrene moieties on the antibacterial effects of norfloxacin, ciprofloxacin and gatifloxacin. Although most of the novel synthesized compounds had lower antibacterial effects, some derivatives show...

2006
William M. Baird Anthony Dipple Philip L. Grover Peter Sims Peter Brookes

DNA was isolated from mouse embryo cell cultures that had been treated with 7-methylben/[fl]anthracene-3H and subsequently degraded with enzymes to deoxyribonucleosides that were chromatographed on a Sephadex LH-20 column. The resultant hydrocarbon-deoxyribonucleoside products were not present in similar enzyme digests of DNA that had been reacted in aqueous solution with either 7-bromomethylbe...

2013
Preet Kaur

In this paper, we elucidated the observational changes in conductance of different anthracene derivatives namely anthracene, anthraquinone, anthracenediamine and anthracencedithiol through two-terminal molecular junctions at room temperature. The main purpose of this work was to show varying impacts of interference phenomena in anthracene molecule stringed to two identical electrodes by differe...

Journal: :Molecules 2013
Siti Mariam Mohd Nor Mohd Aspollah Hj Md Sukari Saripah Salbiah Syed Abdul Azziz Wong Chee Fah Hasimah Alimon Siti Fadilah Juhan

Aminoanthraquinones were successfully synthesized via two reaction steps. 1,4-Dihydroxyanthraquinone (1) was first subjected to methylation, reduction and acylation to give an excellent yield of anthracene-1,4-dione (3), 1,4-dimethoxyanthracene-9,10-dione (5) and 9,10-dioxo-9,10-dihydroanthracene-1,4-diyl diacetate (7). Treatment of 1, 3, 5 and 7 with BuNH2 in the presence of PhI(OAc)2 as catal...

Journal: : 2021

The relevance of this study stems from the need for alignment test methods used identification and assay anthracene derivatives in herbal preparations medicinal products. aim was to analyse Russian international quality standards identify most specific sensitive that could be medicines containing derivatives. comparative analysis requirements Identification , Determination major classes bioacti...

Journal: :The Journal of chemical physics 2014
Steven Bailey David Visontai Colin J Lambert Martin R Bryce Harry Frampton David Chappell

To identify families of stable planar anchor groups for use in single molecule electronics, we report detailed results for the binding energies of two families of anthracene and pyrene derivatives adsorbed onto graphene. We find that all the selected derivatives functionalized with either electron donating or electron accepting substituents bind more strongly to graphene than the parent non-fun...

2017
Sang Woo Kwak Kang Mun Lee Ji-Eun Lee Jisu Yoo Yeonjin Yi Hyoshik Kwon Hyunbok Lee Myung Hwan Park

Diaryl-substituted anthracene derivatives containing 3-(trifluoromethyl)phenyl) groups, 9,10-diphenyl-2-(3-(trifluoromethyl)phenyl)anthracene (1), 9,10-di([1,1′-biphenyl]-4-yl)-2(3-(trifluoromethyl)phenyl)anthracene (2), and 9,10-di(naphthalen-2-yl)-2-(3-(trifluoromethyl)phenyl) anthracene (3) were synthesized and characterized. The compounds 1–3 possessed high thermal stability and proper fron...

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