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750 Newest Publications about the topic bromine

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Tritellurasumanene: Ultrasound Assisted One-Pot Synthesis and Extended Valence Adduct with Bromine

01-Dec-2016 | Shitao Wang; Xuexiang Li; Xueqing Hou; Yantao Sun; Xiangfeng Shao, Chemical Communication, 2016

Tritellurasumanene is synthesized from triphenylene skeleton via ultrasound assisted one-pot reaction. This compound adopts a flat conjugated system and displays Te••Te (3.83 Å) interactions in solid state. The optical property and chemical reactivity is quite different from its trithia- and ...

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Practical and Efficient Synthesis of Polyaryl(hetaryl)-Substituted Cyclohexenones and Salicylates

24-Nov-2016 | Valerii Z. Shirinian; Alexey M. Kavun; Andrey G. Lvov; Igor V. Zavarzin; Michail M. Krayushkin, Synthesis, 2016

SynthesisDOI: 10.1055/s-0036-1588908 A new efficient method was developed for the synthesis of triaryl-substituted cyclohexenones and salicylates. The method is based on the Robinson annulation of readily available keto esters and chalcones, followed by the aromatization of the cyclohexenone ...

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Halogen bonded supramolecular porous structures with kgm layer

17-Nov-2016 | Jingui Duan; Fujun Cheng; Haijun Wang; Yinying Hua; Haifei Cao; Bihang Zhou; Wanqin Jin, CrystEngComm, 2016

By bearing two easy-obtained organic linkers with bromine (Br) and iodine (I) groups, we firstly reveal the construction of water stable supramolecular porous structures with halogen dependent properties.

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Redox Reaction: A New Route for the Synthesis of Water-Miscible Imidazolium Ionic Liquids

16-Nov-2016 | Wenxiu Li; Shangwu Dai; Dong Li; Qinqin Zhang; Hongtao Fan; Tao Zhang; Zhigang Zhang, Synthesis, 2016

SynthesisDOI: 10.1055/s-0036-1589402 A novel chemical redox route was developed for the preparation of water-miscible imidazolium ionic liquids (ILs). In this method, the reaction between 1-alkyl-3-methylimidazolium bromides or 3-butyl-1-phenylimidazolium bromide and the appropriate acid ...

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Degradation of Polymeric Brominated Flame Retardants: Development of an Analytical Approach Using PolyFR and UV Irradiation

11-Nov-2016 | Christoph Koch; Alexander Dundua; Jackelyn Aragon-Gomez; Milen Nachev; Susanne Stephan; Sarah Willach; Mathias Ulbri ..., Environmental Science & Technology, 2016

Many well-established methods for studying the degradation of brominated flame retardants are not useful when working with polymeric and water insoluble species. An example for this specific class of flame retardants is PolyFR (polymeric flame retardant; CAS No 1195978–93–8), which is used as a ...

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Constraints on Arctic Atmospheric Chlorine Production through Measurements and Simulations of Cl2 and ClO

07-Nov-2016 | Kyle D. Custard; Kerri A. Pratt; Siyuan Wang; Paul B. Shepson, Environmental Science & Technology, 2016

During springtime, unique halogen chemistry involving chlorine and bromine atoms controls the prevalence of volatile organic compounds, ozone, and mercury in the Arctic lower troposphere. In situ measurements of the chlorine monoxide radical, ClO, and its precursor, Cl2, along with BrO and Br2, ...

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Dynamic Conversion Between Se–N Covalent and Noncovalent Interactions

03-Nov-2016 | Meng Xie; Lili Wang; Fang Liu; Dongju Zhang; Jun Gao, Journal of Physical Chemistry A, 2016

Se–N dynamic covalent bond is a new dynamic covalent bond which has applications in the fabrication of stimuli responsive and self-healing functional materials. Although recent advances have been achieved in the experimental aspect, little is known about the formation mechanism of Se–N dynamic ...

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Thermal stability of ester linkage in the presence of 1,2,3‐Triazole moiety generated by click reaction

02-Nov-2016 | Kyu Seong Lee, So Yeong Park, Hong Chul Moon, Jin Kon Kim, Journal of Polymer Science Part A: Polymer Chemistry, 2016

ABSTRACT The copper(I)‐catalyzed alkyne‐azide cycloaddition (CuAAC), so‐called “click” reaction, is one of most useful synthetic strategies to connect two polymer chains. 1,2,3‐Triazole ring (TA) produced by the click reaction has good thermal and chemical stability. However, we observed that ...

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Short protecting-group-free synthesis of 5-acetylsulfanyl-histidines in water: novel precursors of 5-sulfanyl-histidine and its analogues

26-Oct-2016 | Sylvain Daunay; Remi Lebel; Laurence Farescour; Jean-Claude Yadan; Irene Erdelmeier, Organic & Biomolecular Chemistry, 2016

The discovery of a non-enzymatic oxidative introduction of sulfur to the 5-position of histidine is reported, by activation with bromine or NBS followed by reaction with thioacetic acid forming novel 5-acetylsulfanyl-histidine. Complementing the previously developed regioselective oxidative ...

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Determination of the absolute stereostructure of a cyclic azobenzene from the crystal structure of the precursor containing a heavy element

19-Oct-2016 | Reji Thomas and Nobuyuki Tamaoki, Beilstein Journal of Organic Chemistry, 2016

Abstract Single crystal X-ray diffraction has been used as one of the common methods for the unambiguous determination of the absolute stereostructure of chiral molecules. However, this method is limited to molecules containing heavy atoms or to molecules with the possibility of ...

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