5324-79-8Relevant academic research and scientific papers
Novel blue thermal activity delayed fluorescence material and application thereof
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Paragraph 0031-0033; 0036, (2020/09/16)
In order to further reduce delta EST and obtain a more efficient TADF material, the invention discloses a novel blue thermal activity delayed fluorescence material and application thereof, and the blue thermal activity delayed fluorescence material is a novel blue light TADF material with dimethyl acridine as a donor, diphenyl sulfone as an acceptor, a benzene ring or pyridine as pi bridge, wherein the dimethyl acridine is a strong electron donating unit, the diphenyl sulfone is a weak acceptor unit, and the combination of the dimethyl acridine and the diphenyl sulfone is beneficial to reducing intramolecular charge transfer effect and realizing blue light emission; the benzene ring or the pyridine pi bridge can increase distortion of molecules, HOMO and LUMO orbital separation can be achieved, the delta EST is reduced, and TADF performance is obtained; meanwhile, the conjugation degree of the molecules can be regulated and controlled at different positions of the dimethyl acridine donor and the diphenyl sulfone acceptor, so that the light-emitting wavelength of the material is regulated, and the TADF material with the emission wavelength within 420-450 nm is realized.
Ruthenium olefin metathesis catalysts containing six-membered sulfone and sulfonamide chelating rings
Szadkowska, Anna,Zukowska, Karolina,Pazio, Aleksandra E.,Wozniak, Krzysztof,Kadyrov, Renat,Grela, Karol
experimental part, p. 1130 - 1138 (2011/04/26)
The preparation and X-ray structure characterization of new olefin metathesis initiators containing sulfone- and sulfonamide-substituted benzylidene ligands are described. We observed that these catalysts exhibit Ru???O(SO)R interactions, forming six-memb
Sulfonylation of aromatic compounds with sulfonic acids using silica gel-supported AlCl3 as a heterogeneous Lewis acid catalyst
Parvanak Boroujeni, Kaveh
experimental part, p. 197 - 203 (2010/11/05)
Silica gel-supported aluminum chloride (SiO2-AlCl3) has been shown to be a mild, efficient, and chemoselective heterogeneous Lewis acid catalyst for direct conversion of arenes to sulfones using sulfonic acids as sulfonylating agents. The catalyst can be prepared easily with cheap starting materials and is stable (as a bench-top catalyst) and reusable.
Polystyrene supported Al(OTf)3: A stable, efficient, selective, and reusable catalyst for sulfonylation of arenes with sulfonic acids
Boroujeni, Kaveh Parvanak
experimental part, p. 1887 - 1890 (2010/11/18)
Cross-linked polystyrene supported aluminium triflate (Ps-Al(OTf) 3) was found to be an efficient and chemoselective heterogeneous Lewis acid catalyst for the direct conversion of arenes to sulfones using sulfonic acids as sulfonylating agents. The solid acid catalyst is stable (as a bench top catalyst) and can be easily recovered and reused without appreciable change in its efficiency.
Highly selective catalytic Friedel-Crafts sulfonylation of aromatic compounds using a FeCl3-based ionic liquid
Bahrami, Kiumars,Khodei, Mohammad Mehdi,Shahbazi, Fomeida
, p. 3931 - 3934 (2008/09/21)
Friedel-Crafts sulfonylation of aromatic compounds was carried out using FeCl3-based ionic liquid. These liquids serve as efficient media as well as Lewis acid catalyst.
Direct sulfonylation of aromatic rings with aryl or alkyl sulfonic acid using supported P2O5/Al2O3
Hajipour, Abdol R.,Zarei, Amin,Khazdooz, Leila,Pourmousavi, Seied A.,Mirjalili, Bi Bi F.,Ruoho
, p. 2029 - 2034 (2007/10/03)
Direct sulfonylation of aromatic rings with aryl or alkyl sulfonic acid supported P2O5/Al2O3 (w/w 50%) under heterogeneous conditions in short reaction time and high yields. Copyright Taylor & Francis Inc.
An efficient method for aromatic Friedel-Crafts alkylation, acylation, benzoylation, and sulfonylation reactions
Singh, Ravi P,Kamble, Rajesh M,Chandra, Kusum L,Saravanan,Singh, Vinod K
, p. 241 - 247 (2007/10/03)
Aromatic electrophilic substitution reactions such as alkylation, acylation, benzoylation, and sulfonylation were studied in the presence of a catalytic amount of Cu(OTf)2 and Sn(OTf)2. Cu(OTf)2 was very efficient for alkylation, acylation, and benzoylation reactions. However, in case of sulfonylation reactions, Sn(OTf)2 gave better results.
Halodediazoniations of dry arenediazonium o-benzenedisulfonimides in the presence or absence of an electron transfer catalyst. Easy general procedures to prepare aryl chlorides, bromides, and iodides
Barbero,Degani,Dughera,Fochi
, p. 3448 - 3453 (2007/10/03)
The paper reports the results of a wide study aimed at preparing aryl chlorides 3 (19 examples), bromides 4 (19 examples), and iodides 5 (9 examples) by halodediazoniation of dry arenediazonium o-benzenedisulfonimides 1 with tetraalkylammonium halides 2. The reactions were carried out in anhydrous acetonitrile at room temperature (~20 °C) in the presence of copper powder and at 60 °C or room temperature without the catalyst. In optimal conditions the yields were from good to excellent (60 reactions, 61- 94% yield), with only a few exceptions (8 reactions, 51-55% yield). A good amount of the o-benzenedisulfonimide (7) was always recovered from the reactions and could then be reused to prepare salts 1. An interesting aspect of this research is the surprising role of the anion of o- benzenedisulfonimide (9) as an electron transfer agent.
Scope and limitations in the Jacobsen epoxidation of dienyl sulfones
Hentemann,Fuchs
, p. 5615 - 5618 (2007/10/03)
Symchiral (salen)Mn(III)CI complexes catalyze the epoxidation of 2-sulfonyl, 1,3 cyclic dienes with exceptional enantioselectivity. The incorporation of the sulfone moiety increases the enantioselectivity by up to 30%, relative to the unsubstituted cyclic
