A novel synthetic approach to 4-acetamido-1-arylindazoles via Semmler–Wolff rearrangement of 1-aryl-6,7-dihydro-5H-indazol-4-one oxime
摘要:
A simple and efficient procedure for the syntheses of 4-acetamido-1-arylindazoles from corresponding 1-aryl-6,7-dihydro-5H-indazol-4-one oximes by Semmler-Wolff aromatization using acetic anhydride and sodium iodide is reported. (C) 2014 Elsevier Ltd. All rights reserved.
A novel synthetic approach to 4-acetamido-1-arylindazoles via Semmler–Wolff rearrangement of 1-aryl-6,7-dihydro-5H-indazol-4-one oxime
摘要:
A simple and efficient procedure for the syntheses of 4-acetamido-1-arylindazoles from corresponding 1-aryl-6,7-dihydro-5H-indazol-4-one oximes by Semmler-Wolff aromatization using acetic anhydride and sodium iodide is reported. (C) 2014 Elsevier Ltd. All rights reserved.
A simple, efficient and three component one-pot synthesis of 1,4,5-trisubstitutedpyrazoles by condensation of β-dicarbonyls, N,N-dimethylformamide dimethyl acetal (DMFDMA) and hydrazine derivatives in 2,2,2-trifluoroethanol without using any catalyst and activation, is described.
A new series of pyrazolo[3,4-h]quinolines, heteroanalogues of angelicin was conveniently prepared with a broad substitution pattern. A large number of derivatives was obtained and the cellular photocytotoxicity was evaluated in vitro against 5 different human tumor cell lines with GI(50) values reaching the nanomolar level (14.52-0.04 mu M). Selected compounds were able to photoinduce a massive cell death with the involvement of mitochondria. Their photodamage cellular targets were proteins and lipids and they did not cause any kind of DNA photodamage. This latter event is of considerable importance in the modulation of long term side effects, generally associated with the use of classical furocoumarins. (C) 2015 Elsevier Masson SAS. All rights reserved.
Four-Component Domino Synthesis of Pyrazolo[3,4-<i>h</i>]quinoline-3-carbonitriles: “Turn-Off” Fluorescent Chemosensor for Fe<sup>3+</sup> Ions
The synthesis of novel pyrazolo[3,4-h]quinoline-3-carbonitriles has been achieved through a one pot, four-component domino strategy under solvent-free microwave conditions. One of these compounds exhibited fluorescence under UV lamp and was found to be highly sensitive toward Fe3+ ions in DMSO against various metal ions with a detection limit of 8.6 x 10(-7) M.
[EN] ORGANIC LIGHT-EMITTING COMPOUND AND ORGANIC ELECTROLUMINESCENT ELEMENT USING SAME<br/>[FR] COMPOSÉ ÉLECTROLUMINESCENT ORGANIQUE ET ÉLÉMENT ÉLECTROLUMINESCENT ORGANIQUE UTILISANT CE DERNIER<br/>[KO] 유기 발광 화합물 및 이를 이용한 유기 전계 발광 소자
申请人:DOOSAN CORP
公开号:WO2017111360A1
公开(公告)日:2017-06-29
본 발명은 신규한 유기 전계 발광 화합물 및 이를 이용한 유기 전계 발광 소자에 관한 것으로, 보다 상세하게는 발광능이 우수한 신규 화합물 및 이를 하나 이상의 유기물층에 포함함으로써, 높은 발광효율, 낮은 구동전압, 긴 수명 등의 특성이 향상된 유기 전계 발광 소자에 관한 것이다.