Articles with "unsymmetrically substituted" as a keyword



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Synthesis and optical properties of novel unsymmetrically substituted benzothiadiazole-based luminophores

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Published in 2021 at "Mendeleev Communications"

DOI: 10.1016/j.mencom.2021.01.009

Abstract: New unsymmetrically substituted benzothiadiazoles were synthesized from 4,7-dibromo-2,1,3-benzothiadiazole via the sequence of Pd-catalyzed Suzuki and Buchwald–Hartwig cross-coupling reactions with 4-methoxyphenylboronic acid and heterocyclic amines, respectively. Based on initially performed photophysical study as well as DFT… read more here.

Keywords: novel unsymmetrically; properties novel; substituted benzothiadiazole; optical properties ... See more keywords
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Synthesis of symmetrically and unsymmetrically substituted S,S-dialkyl phosphonodithioates

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Published in 2017 at "Tetrahedron Letters"

DOI: 10.1016/j.tetlet.2017.09.065

Abstract: Abstract Herein, we report the synthesis of a range of S,S -dialkyl phosphonodithioates. Symmetrically substituted analogues were readily prepared from the corresponding phosphonic dichlorides in good to moderate yields, while unsymmetrically substituted variants were obtained… read more here.

Keywords: symmetrically unsymmetrically; synthesis symmetrically; substituted dialkyl; dialkyl phosphonodithioates ... See more keywords
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Facile access to unsymmetrically substituted tellurium-boron based heterocycles.

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Published in 2017 at "Chemical communications"

DOI: 10.1039/c7cc03648e

Abstract: Reactions of Te-B heterocycles Te((Ph)C[double bond, length as m-dash]C(C6F5))2B(C6F5) 1 with alcohols is shown to afford species of the form Te((Ph)C[double bond, length as m-dash]C(C6F5))2BOR. The subsequent reaction with either 4-Br-C6H4CCH or 3-(C4H3S)CCH proceeds with… read more here.

Keywords: length dash; based heterocycles; bond length; unsymmetrically substituted ... See more keywords
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Sensing alcohol vapours with novel unsymmetrically substituted metallophthalocyanines.

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Published in 2019 at "Dalton transactions"

DOI: 10.1039/c9dt01409h

Abstract: Unsymmetrically substituted phthalocyanines were synthesized by the well-known statistical condensation method using two differently substituted precursors, 4-tert-butylphthalonitrile and 4-(4-pyrrol-1-yl)phenoxyphthalonitrile. Spin-coated thin films of these compounds were subsequently exposed to varying concentrations of methanol, ethanol and… read more here.

Keywords: number carbon; vapours novel; unsymmetrically substituted; sensing alcohol ... See more keywords
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New green energetic materials based on unsymmetrically substituted pyrazole-tetrazines and their hydroperchlorates

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Published in 2019 at "New Journal of Chemistry"

DOI: 10.1039/c9nj04519h

Abstract: Some novel metal-free energetic materials were synthesized. Structural diversification of substituted tetrazines affects their physical and explosive properties making them have potential applications as green energetic materials. read more here.

Keywords: energetic materials; based unsymmetrically; new green; materials based ... See more keywords
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Syn- versus anti-carbopalladation of alkynes with organoborons: access to indoles symmetrically and unsymmetrically substituted on their 2,3-positions.

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Published in 2023 at "Chemical communications"

DOI: 10.1039/d3cc01753b

Abstract: A palladium (II)-catalyzed borono-ortho-CH activation/amination cascade for the construction of two C-N bonds and one C-C bond in a single synthetic sequence is reported. This method proceeds through a formal syn-carbopalladation of alkynes with organoboron… read more here.

Keywords: versus anti; unsymmetrically substituted; anti carbopalladation; carbopalladation alkynes ... See more keywords
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Flow reactor synthesis of unsymmetrically substituted p-terphenyls using sequentially selective Suzuki cross-coupling protocols

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Published in 2019 at "Green Chemistry Letters and Reviews"

DOI: 10.1080/17518253.2019.1677786

Abstract: ABSTRACT Synthetic procedures, based on integrated flow chemical methods, have been developed for the sequential chemo-selective Suzuki–Miyaura cross-coupling of 1,4-dibromo-2-nitrobenzene (1) with various arylboronic acids. The first Suzuki coupling step used a phosphine-(ligand)-free palladium catalyst… read more here.

Keywords: selective suzuki; cross coupling; unsymmetrically substituted;