50682-33-2Relevant academic research and scientific papers
Synthesis of trifluoromethyl- A nd ester group-substituted α-carbolines via iron-catalyzed tandem cyclization reaction
Xu, Yumin,Chen, Xiaoqian,Gao, Yiqin,Yan, Zicong,Wan, Changfeng,Liu, Jin-Biao,Wang, Zhiyong
, p. 4354 - 4364 (2020/04/10)
An efficient approach to prepare trifluoromethyl-α-carbolines and ester group-substituted α-carbolines via the tandem cyclization reaction of 2-(2-aminophenyl)acetonitriles and trifluoromethyl 1,3-diones or ,?-unsaturated α-ketoesters was reported. The tr
OLED main body material, preparation method thereof, and OLED device
-
Paragraph 0073; 0074; 0077, (2019/12/02)
The invention discloses an OLED main body material, a preparation method thereof, and an OLED device. The structural formula of the OLED main body material is shown as a formula I; in the formula I, the R1 and R4 are one of C1-C20 alkyl, phenyl, 4-methylphenyl, 4-methoxyphenyl or furan-2-yl groups, the R2 and R3 are one of phenyl, naphthyl, furan, thiophene, benzofuran and benzothiophenol, and theR5, R6, R7 and R8 are one of C1-C20 alkyl, methoxy and phenyl groups. The OLED main body material provided by the invention is a main body material with better compatibility with an organic small molecule luminescent material, so that the problem of instability of a device caused by phase separation of a doping system is avoided, and the efficiency roll-off is relieved to prolong the service lifeof the device.
Preparation of Pyrido[2,3-b]indole Derivatives Using Silicates of Group 1 and 2 Metals
Sheikh, Setareh,Fazlinia, Abbas
, p. 2291 - 2296 (2018/09/06)
An efficient synthesis of 2,4-diaryl-9H-pyrido[2,3-b] indole derivatives in aqueous medium via the three-component reaction of indolin-2-one, a chalcone and ammonium acetate was developed using Na2SiO3, K2SiO3, Li2SiO3, CaSiO3, MgSiO3, BaSiO3, SrSiO3, and ZnSiO3 as catalysts. Results of activity evaluations indicated that among of the metal silicate used alkali metal silicates exhibits much higher activity than other samples due to the stronger basicity power and higher solubility in water. Under the optimum reaction conditions, all of the reactions with diverse aromatic aldehydes provided high yields in low reaction times.
Regioselective switching approach for the synthesis of α and δ carboline derivatives
Yang, Tang-Hao,Kuo, Chun-Wei,Kavala, Veerababurao,Konala, Ashok,Huang, Chia-Yu,Yao, Ching-Fa
, p. 1676 - 1679 (2017/02/10)
A metal-free protocol for accessing both α and δ-carboline derivatives, starting from a common indolylchalcone oxime ester precursor is reported. The reaction involves mild conditions and uses a regiodivergent approach. DDQ is used as a switching agent in selectively generating α and δ-carboline derivatives in good to moderate yields.
