Results 21 to 30 of about 8,006 (250)

An Efficient and Facile Methodology for Bromination of Pyrimidine and Purine Nucleosides with Sodium Monobromoisocyanurate (SMBI)

open access: yesMolecules, 2013
An efficient and facile strategy has been developed for bromination of nucleosides using sodium monobromoisocyanurate (SMBI). Our methodology demonstrates bromination at the C-5 position of pyrimidine nucleosides and the C-8 position of purine ...
Roger Stromberg, Jyotirmoy Maity
doaj   +1 more source

Potassium iodide catalysis in the alkylation of protected hydrazines; pp. 10–17 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2016
Potassium iodide catalysis was applied for the synthesis of protected benzylhydrazines and hydrazinoacetic acid esters by the alkylation of protected hydrazines. Benzylic halogenides and halogenoacetic acid esters were employed as alkylating agents.
Anton Mastitski   +3 more
doaj   +1 more source

Synthesis of Bromo Eugenol Derivatives with Molecular Bromine

open access: yesJurnal Kimia Sains dan Aplikasi
The bromination of eugenol using molecular bromine (Br2) has been widely reported. However, the outcomes have been inconsistent, and as a result, the specific steps of the bromination process have not been definitively established.
Verucha Fauzia Putri   +2 more
doaj   +1 more source

Bromination and Diazo-Coupling of Pyridinethiones; Microwave Assisted Synthesis of Isothiazolopyridine, Pyridothiazine and Pyridothiazepines

open access: yesMolecules, 2012
Isothiazolopyridines, pyridothiazines and pyridothiazepines are important compounds that possess valuable biological activities. This paper reports on the synthesis of these compounds using both conventional chemical methods and modern microwave ...
Ayman M. S. Youssef   +2 more
doaj   +1 more source

Bromination of quinolin-4(1H)-ones as an efficient strategy for the development of new antibacterial agents

open access: yesЖурнал органічної та фармацевтичної хімії, 2020
Aim. To study the reactivity of 2-methylquinolin-4(1H)-ones in the bromination reaction in order to develop target-oriented methods for the synthesis of compounds that can affect the Quorum sensing processes of various bacterial communities.
V. О. Zubkov   +3 more
doaj   +1 more source

Semiconducting Polymers Post‐Functionalized With Ureido‐Pyrimidinone for Robust Stretchable Transistors

open access: yesAdvanced Functional Materials, EarlyView.
The design of intrinsically robust stretchable semiconducting polymers was achieved through OTBS‐mediated post‐functionalization of PDPP2T side chains with UPy units, generating dual hydrogen‐bonding motifs comprising weaker urethane linkages and strong quadruple UPy interactions along the long alkyl side chain, which is crucial for achieving desirable
Dinda Bazliah   +7 more
wiley   +1 more source

Stepwise On‐Surface Synthesis and Transformations of Two‐Dimensional Covalent Organic Frameworks by Controlled Thermal Stimuli

open access: yesAdvanced Materials, EarlyView.
The seminal transformation of a 2D‐COF (SURFCOF‐IMDEA1) into a 2D porous COF (SURFCOF‐IMDEA2) on Au(111) by a sequential C‐C coupling and ladderization triggered by thermal annealing steps at increasing temperatures is reported. Abstract The development of covalent organic frameworks (COFs) is currently a primary objective in materials science, taking ...
Ana Barragán   +11 more
wiley   +1 more source

(E)-3-((2-Fluorophenyl)(hydroxy)methylene)imidazo[1,2-a]pyridin-2(3H)-one

open access: yesMolbank, 2021
Treatment of a N-2-pyridyl-β-ketoamide precursor with bromine afforded the first example of the 3-aryl(α-hydroxy)methylenelimidazo[1,2-a]pyridin-2(3H)-one framework. This transformation proceeded through a domino process comprising an initial bromination,
Giammarco Tenti   +3 more
doaj   +1 more source

Spin and Charge Control of Topological End States in Chiral Graphene Nanoribbons on a 2D Ferromagnet

open access: yesAdvanced Materials, EarlyView.
Chiral graphene nanoribbons on a ferromagnetic gadolinium‐gold surface alloy display tunable spin and charge states at their termini. Atomic work function variations and exchange fields enabe transitions between singlet, doublet, and triplet configurations.
Leonard Edens   +8 more
wiley   +1 more source

Synthetic Routes to N-9 Alkylated 8-Oxoguanines; Weak Inhibitors of the Human DNA Glycosylase OGG1

open access: yesMolecules, 2015
The human 8-oxoguanine DNA glycosylase OGG1 is involved in base excision repair (BER), one of several DNA repair mechanisms that may counteract the effects of chemo- and radiation therapy for the treatment of cancer. We envisage that potent inhibitors of
Tushar R. Mahajan   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy