86-20-4Relevant academic research and scientific papers
New β-oxime ester biphenyl compounds, photoinitiators containing them and photosensitive resin compositions
-
Paragraph 0039-0046, (2020/06/10)
The present invention relates to a novel andbeta;-oxime ester biphenyl compound, and a photoinitiator and a photosensitive resin composition containing the same. The problem to be solved in the present invention is to provide an initiator which does not generate yellowing under heat-resistant conditions since the initiator has excellent radical generation efficiency with a small exposure amount.COPYRIGHT KIPO 2020
A carbazole-based turn-on fluorescent probe for the detection of hydrazine in aqueous solution
Wang, Wei-Dong,Hu, Yang,Li, Qiao,Hu, Sheng-Li
, p. 206 - 211 (2018/04/02)
A carbazole-based fluorescent probe, 2-(9-ethyl-9H-carbazol-3-yl) isoindoline-1,3-dione, with a low detection limit (2.673 × 10?6 M) for the detection of hydrazine is designed and synthesized based on Gabriel reaction. The probe responds selectively to hydrazine over other amino compounds with marked fluorescence enhancement. Moreover, test paper experiments indicated its great potential in the environment monitoring of hydrazine in aqueous solution.
Use for RL intermediate condensation product synthesis process (by machine translation)
-
Paragraph 0017, (2017/08/29)
The present invention discloses a use for RL intermediate condensation product synthesis process, the process comprises the steps of: carbazole alkylation N - ethyl carbazole made, by nitration, reduction to generate a 3 - amino - N - ethyl carbazole, then in the organic solvent in the condensation reaction, use for intermediate condensate obtained RL; in this invention the condensation reaction using an alcohol as a solvent to replace the traditional O-chlorobenzene, improves the 3 - amino - N - ethyl carbazole conversion rate, and improves the use for RL crude purity and yield, and the process is stable, simple operation, high safety factor. (by machine translation)
Substituted Carbazoles-A New Class of Anthelmintic Agent
Rennison, David,Gueret, Stephanie M.,Laita, Olivia,Bland, Ross J.,Sutherland, Ian A.,Boddy, Ian K.,Brimble, Margaret A.
, p. 1268 - 1276 (2016/11/25)
A series of novel carbazoles were synthesized based on structural modifications to lead carbazole 1 (EC100≤2.5M against Haemonchus contortus in vitro), which was revealed in a small molecule screening program as a potentially promising platform for the development of new anthelmintic drugs. Subsequently, analogues 19, 21, 41, 42 (EC100≤ 1.25M, all), and 39 (EC100≤0.625M) were demonstrated to exhibit enhanced in vitro anthelmintic activity over the lead structure, with compound 39 also being shown to be active in vivo against Heligmosomoides polygyrus.
Novel Schiff base compound taking triphenylamine as center and preparation of novel Schiff base compound
-
Paragraph 0026, (2016/10/07)
The invention provides a novel Schiff base compound taking triphenylamine as a center and having a structural formula I, and a preparation method of the novel Schiff base compound. The preparation method comprises steps of: reacting triphenylamine with DMF and POCl3 to prepare 4,4-diformyltriphenylamine; preparing N-ethylcarbazole from carbazole and bromoethane; nitrifying N-ethylcarbazole to obtain 3-nitro-N-ethylcarbazole; further reducing nitro to obtain 3-amino-N-ethylcarbazole; and finally reacting 4,4-diformyltriphenylamine with 3-nitro-N-ethylcarbazole to obtain the Schiff base compound. The prepared Schiff base compound has carbon-nitrogen double bonds (C=N) and a relatively large pi electron delocalization skeleton, which provides the compound with a relatively large fluorescence absorption coefficient. Due to the presence of lone pair electrons of C=N, the novel Schiff base compound has a potential application to detection of metal ions.
Carbazole N-substituent effect upon DTMA: Stabilizing and photochromic modulating
Huo, Zhiming,Li, Zhipeng,Wang, Tingting,Zeng, Heping
supporting information, p. 8964 - 8973 (2013/09/23)
Dithienylmaleimide derivatives 7-27 were synthesized by introducing N-substituted carbazole for photo-stabilizing purpose, and the structures were fully confirmed. The photochromism and photo-stability were recorded via UV-vis spectra. Only ortho compounds 8-17 with N-substituents on carbazole moiety showed escalated photochromic change, while compound 7 and the para counterparts 18-27 showed no appreciable photochromism. Additionally, compounds 8-18 exhibited good photo-stability except 17 under 254 nm irradiation. The unstability of 17 may probably due to overrunning hindrance. These photochromic patterns indicated that hindrance and electronic effect mutually paid a decisive influence on the photochromism and photo-stability, which potentially exploited a new way to construct novel photochromic materials with regulable and conceivable performance.
One-pot three-component mild synthesis of 2-Aryl-3-(9-alkylcarbazol-3-yl) thiazolidin-4-ones
Li, Zheng,Zhu, Anguo,Yang, Jingya
, p. 1458 - 1461 (2013/02/22)
A series of novel 2-aryl-3-(9-alkylcarbazol-3-yl)thiazolidin-4-ones were synthesized by one-pot three-component reactions of 3-amino-9-alkylcarbazoles, aromatic aldehydes, and 2-mercaptoacetic acid by using dicyclohexylcarbodiimide (DCC) as a cyclizing agent in dry diethyl ether at room temperature. This protocol has advantages of mild condition, short reaction time, high yield, and simple work-up procedure.
3-Aminocarbazole Compounds, Pharmaceutical Composition Containing the Same and Method for the Preparation Thereof
-
Page/Page column 9, (2008/12/08)
A compound of formula (I), in which R1, R2, R3, R4, R5, R6, X and Y have the meanings indicated in the description, and the pharmaceutically acceptable salts thereof. A pharmaceutical composition containing a compound of formula (I) or a pharmaceutically acceptable salt thereof. A method for preparing the abovementioned compound of formula (I) and the pharmaceutically acceptable salts thereof.
3-AMINOCARBAZOLE COMPOUNDS, PHARMACEUTICAL COMPOSITION CONTAINING THE SAME AND METHOD FOR THE PREPARATION THEREOF
-
Page/Page column 27-28, (2010/11/25)
A compound of formula (I), in which R1 , R2, R3, R4, R5, R6, X and Y have the meanings indicated in the description, and the pharmaceutically acceptable salts thereof. A pharmaceutical composition containing a compound of formula (I) or a pharmaceutically acceptable salt thereof. A method for preparing the abovementioned compound of formula (I) and the pharmaceutically acceptable salts thereof.
A New and Facile Method for the Synthesis of Nitrocarbazoles by Urea Nitrate
Nagarajan, Rajagopal,Muralidharan,Perumal, Paramasivan T.
, p. 1259 - 1264 (2007/10/03)
Urea nitrate in acetic acid is found to be an effective and mild nitrating agent for the preparation of mono nitrocarbazoles.
