61794-57-8Relevant academic research and scientific papers
Synthesis of polyfluorinated 4?hydroxyquinolin-2(1H)?ones based on the cyclization of 2-alkynylanilines with carbon dioxide
Politanskaya, Larisa,Tretyakov, Evgeny,Xi, Chanjuan
, (2021/01/18)
Convenient and efficient synthesis of polyfluorinated 4-hydroxyquinolin-2(1H)-ones from the corresponding o-alkynylaniline derivatives and CO2 (1 atm), mediated by 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) and AgNO3 in acetonitrile wa
Directional Materials-Nanoporous Organosilica Monoliths with Multiple Gradients Prepared Using Click Chemistry
Schachtschneider, Andreas,Wessig, Martin,Spitzbarth, Martin,Donner, Adrian,Fischer, Christian,Drescher, Malte,Polarz, Sebastian
, p. 10465 - 10469 (2015/09/02)
The existence of more than one functional entity is fundamental for materials, which are desired of fulfilling complementary or succeeding tasks. Whereas it is feasible to make materials with a homogeneous distribution of two different, functional groups, cases are extremely rare exhibiting a smooth transition from one property to the next along a defined distance. We present a new approach leading to high-surface area solids with functional gradients at the microstructural level. Periodically ordered mesoporous organosilicas (PMOs) and aerogel-like monolithic bodies with a maximum density of azide groups were prepared from a novel sol-gel precursor. The controlled and fast conversion of the azide into numerous functions by click chemistry is the prerequisite for the implementation of manifold gradient profiles. Herein we discuss materials with chemical, optical and structural gradients, which are interesting for all applications requiring directionality, for example, chromatography.
Arene-perfluoroarene interactions in crystal engineering: Structural preferences in polyfluorinated tolans
Smith, Caroline E.,Smith, Philip S.,Thomas, Rhodri Ll.,Robins, Edward G.,Collings, Jonathan C.,Dai, Chaoyang,Scott, Andrew J.,Borwick, Simon,Batsanov, Andrei S.,Watt, Stephen W.,Clark, Stewart J.,Viney, Christopher,Howard, Judith A. K.,William, Clegg,Marder, Todd B.
, p. 413 - 420 (2007/10/03)
The compounds 4-ROC6F4C≡Ph (4) where R = Me (a), Et (b), Prn (c), Pri (d), Bun (e), W-C5H11 (f), PhCH2 (g), PhCH2CH 2 (h), 4-MeC6Hsub
Synthesis and Herbicidal Activity of Phenylproparginols
Parlow, John J.,Clark, Robert D.
, p. 2600 - 2609 (2007/10/02)
A three-step/one-pot procedure was developed for preparing herbicidal fluorophenylproparginols from acetophenones by way of an enol phosphate intermediate.Side-by-side testing of 16 of the more active analogs showed that trans-2-methyl-1-2-(4-methoxy-2,3
SYNTHESIS OF SUBSTITUTED POLYFLUORO-AROMATIC ACETYLENES
Zhang, Yadong,Wen, Jianxun
, p. 333 - 340 (2007/10/02)
Reaction of pentafluoro-aromatic acetylene compounds with large excesses of nucleophilic agents using K2CO3 as base gave polysubstituted and monosubstituted polyfluoro-aromatic acetylenes.
OLIGOMERS DERIVED FROM THE NUCLEOPHILIC SUBSTITUTION OF THE PARA FLUORINE DURING THE REACTION OF 1-PENTAFLUOROPHENYL-1-LITHIO-ETHENE WITH HEXAFLUOROBENZENE
Brooke, Gerald M.,Mawson, Simon D.
, p. 123 - 131 (2007/10/02)
The para fluorine in 1-bromo-1-(pentafluorophenyl)ethene (3) is replaced exclusively by sodium methoxide to give 1-bromo-1-(4-methoxy-2,3,5,6-tetrafluorophenyl)-ethene (4) and 2,3,5,6-tetrafluoro-4-methoxyphenylethyne (5).Lithiation of (3) with n-butyllithium and reaction with hexafluorobenzene gave 1,1-bis-(pentafluorophenyl)ethene (7), Ar3*(8), Ar4*(9), Ar5*(10), and Ar6*(11). (*For an explanation of these notations see text).With magnesium in tetrahydrofuran, the bromo-compound (3) gave an intractable polymeric material, the structure of which, by analogy with the reaction of the lithium compound, is proposed as (6).
Synthesis of (p-Substituted-tetrafluorophenyl)ethynes and Diacetylene Monomers Containing Fluoro-Aromatic Rings by Nucleophilic Substitution on triethylsilane
Zhang, Yadong,Wen, Jianxun,Du, Wenying
, p. 293 - 300 (2007/10/02)
Substitutions on trimethylsilylsilane (1) with nucleophiles, Nu-X (2) give the corresponding trimethylsilanes (3) or (p-substituted-tetrafluorophenyl)ethynes (4).The trimethylsilyl group of (3) can be easily removed by treatment with dilute alkali to give (p-substituted-tetrafluorophenyl)-ethynes (4).Diacetylenes containing fluoro-aromatic rings are prepared by the Chodkiewiez-Cadiot and the Hay coupling of the corresponding terminal acetylenes (4).
