49572-63-6Relevant academic research and scientific papers
Electrophilic Activation of Iodonium Ylides by Halogen-Bond-Donor Catalysis for Cross-Enolate Coupling
Saito, Masato,Kobayashi, Yusuke,Tsuzuki, Seiji,Takemoto, Yoshiji
, p. 7653 - 7657 (2017)
The umpolung alkylation of silyl enol ethers with an iodonium(III) ylide proceeds under mild conditions to afford various 1,4-dicarbonyl compounds in high yields in the presence of a halogen-bonding catalyst. Unlike typical transition-metal activation processes of such ylide precursors, which tend to proceed via carbenoid intermediates, experimental and computational studies indicate that halogen bonding (XB) between the XB donor catalyst and the iodonium ylide plays a crucial role in promoting the reaction. The identification of a compatible Bronsted base catalyst enabled the extension of this method to enols generated in situ to give the corresponding adducts in good yields.
Halogen Bond-Catalyzed Povarov Reactions
Liu, Xuelei,Toy, Patrick H.
, p. 3437 - 3441 (2020/07/24)
The use of a bidentate halogen bond donor to catalyse Povarov reactions of imines derived from aryl adehydes and anilines is reported. Dienophiles used in these reactions included 2,3-dihydrofuran, N-vinyl-2-pyrrolidone and N-Cbz-protected 2,3-dihydropyrr
Halogen Bond-Catalyzed Friedel-Crafts Reactions of Aldehydes and Ketones Using a Bidentate Halogen Bond Donor Catalyst: Synthesis of Symmetrical Bis(indolyl)methanes
Liu, Xuelei,Ma, Shuang,Toy, Patrick H.
, p. 9212 - 9216 (2019/11/14)
The use of a halogen bond donor to catalyze Friedel-Crafts reactions of indoles with a range of aldehydes and ketones to directly produce bis(indolyl)methanes, including the natural products arsindoline A, arundine, trisindoline, and vibrindole A, is reported. The bidentate catalyst used in these reactions proved to be more effective than a monondentate analogue, a thiourea commonly used as an organocatalyst, and even a trityl cation that has been used previously in the synthesis of bis(indolyl)methanes.
NOVEL COMPOUND FOR ORGANIC ELECTROLUMINESCENT DEVICE AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
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Paragraph 0125; 0126; 0127, (2016/11/24)
Disclosed are: an organic electroluminescent element compound represented by structural formula 1 or 2 below; and an organic electroluminescent element comprising same. In this way, it is possible to provide an organic electroluminescent element compound which can be used as a host, hole-transport material and electron-transport material that has outstanding electrical stability and electron- and hole-transporting ability, a high level of triplet state energy and is able to improve the light-emitting efficiency of phosphorescent light-emitting materials, and an organic electroluminescent element.
Synthesis and optical properties of 2,2'-biimidazole and benzo[d]imidazole derivatives: Changing π-conjugation by photoexcitation
Matsumoto, Shoji,Zhao, Yu,Akazome, Motohiro
, p. 261 - 273 (2014/01/17)
1,1',5,5'-Tetraaryl-2,2'-biimidazole and benzo[d]imidazole derivatives were synthesized. Symmetrical and unsymmetrical benzo[d]imidazole derivatives could be obtained by the Pd-catalyzed coupling reaction between 2-iodo-benzo[d] imidazole and the correspo
