Preparation of Pyrido[2,3-<i>b</i>
]indole Derivatives Using Silicates of Group 1 and 2 Metals
作者:Setareh Sheikh、Abbas Fazlinia
DOI:10.1002/jhet.3284
日期:2018.10
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
Synthesis of Trifluoromethyl- and Ester Group-Substituted α-Carbolines via Iron-Catalyzed Tandem Cyclization Reaction
作者:Yumin Xu、Xiaoqian Chen、Yiqin Gao、Zicong Yan、Changfeng Wan、Jin-Biao Liu、Zhiyong Wang
DOI:10.1021/acs.joc.0c00048
日期:2020.3.20
An efficient approach to prepare trifluoromethyl-α-Carbolines and ester group substituted α-Carbolines via tandem cyclization reaction of 2-(2-aminophenyl)acetonitriles and trifluoromethyl 1,3-diones or β,γ-unsaturatedα-ketoesters was reported. The transformation proceeded smoothly in the presence of catalytic environment-benign iron salts, which prepared the desired products in moderate good to goodexcellent