Results 21 to 30 of about 29,373 (276)
Regioselectivity of the bromination of 1-oxo-1, 2, 3, 4-tetrahydronaphthalene and 6, 7-dimethyl-1-oxo-1, 2, 3, 4-tetrahydronaphthalene, and thiabiscyclanones synthesis on their basis [PDF]
Journal of the Serbian Chemical Society, 2004 On the basis of quantum chemical (PM3 andRHF/6-31G*) study, the regioselectivity of the bromination of 1-oxo-1,2,3,4-tetrahydronaphthalene (1) and 6,7-dimethyl-1-oxo-1,2,3,4-tetrahydronaphthalene (2) at their alicyclic and aromatic fragments was quantum ...
Pankratov Alexei N. +4 more
doaj +3 more sources
Selective C(sp2)−H Halogenation of "click" 4-Aryl-1,2,3-triazoles [PDF]
, 2017 Selective bromination reactions of “click compounds” are described. Electron-neutral and electron-deficient arenes selectively undergo unprecedented Pd-catalyzed C–H ortho-halogenations assisted by simple triazoles as modular directing groups, whereas ...
Correa Navarro, Arkaitz +2 more
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Bromination of hydrocarbons with CBr4, initiated by light-emitting diode irradiation
Beilstein Journal of Organic Chemistry, 2013 The bromination of hydrocarbons with CBr4 as a bromine source, induced by light-emitting diode (LED) irradiation, has been developed. Monobromides were synthesized with high efficiency without the need for any additives, catalysts, heating, or inert ...
Yuta Nishina +2 more
doaj +1 more source
Molecules, 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
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Remote functionalization by tandem radical chain reactions [PDF]
, 1997 Normal radical relay chlorination of cholestan-3α-ol directed by an attached m-iodobenzoate ester group affords a 9α-chloro steroid, but when the same reaction is conducted in the presence of an excess of CBr4 the product is a 9α-bromo steroid ...
Wiedenfeld, David
core +1 more source
Synthesis of Bromo Eugenol Derivatives with Molecular Bromine
Jurnal Kimia Sains dan AplikasiThe 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
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Molecules, 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
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Potassium iodide catalysis in the alkylation of protected hydrazines; pp. 10–17 [PDF]
Proceedings 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 hetero-bifunctional, end-capped oligo-EDOT derivatives [PDF]
, 2016 Conjugated oligomers of 3,4-ethylenedioxythiophene (EDOT) are attractive materials for tissue engineering applications, and as model systems for studying the properties of the widely used polymer PEDOT.
Armgarth, A +5 more
core +4 more sources
An improved synthesis of (2E,4Z)-6-(benzyloxy)-4-bromohexa-2,4-dien-1-ol [PDF]
, 2007 An improved synthesis of (2E,4Z)-6-(benzyloxy)-4-bromohexa-2,4-dien-1-ol has been devised. This new route increases the throughput and yield of the diene product by circumventing a low yielding preparation of boronic acid intermediate as well as removing
Clarke, Paul A. +3 more
core +1 more source