首次研究了4,7-二氢吲哚与芳基醛作为亲电伙伴的亲电取代反应,然后进行氧化步骤以生成2,2'-双(吲哚基)芳基甲烷。该反应在操作简单且廉价的过程中使用多种底物在吲哚的2,2'-位提供了区域选择性。据我们所知,这是以无取代基方式获得的2,2'-双(吲哚基)芳基甲烷的第一组实例。还报道了一种从二吡咯甲烷到相应的2-苄基吲哚的简便方法。另外,将2,2'-双(吲哚基)芳基甲烷转化为5,7-二氢吲哚并[2,3- b ]咔唑。
Synthesis and application of silica phenyl sulfonic acid as a solid acid heterogeneous catalyst for one-pot synthesis of 2-aryl-1-arylmethyl-1H-1,3-benzimidazoles and bis(indolyl)methanes in water
作者:Hojat Veisi、Alireza Sedrpoushan、Mohammad Ali Zolfigol、Farajollah Mohanazadeh
DOI:10.1002/jhet.765
日期:2011.11
Silica phenyl sulfonicacid (SPSA) was prepared and effectively used in the one‐pot synthesis of 2‐aryl‐1‐arylmethyl‐1H‐1,3‐benzimidazoles from o‐phenylenediamine with aldehydes in water in the presence of tetrabutyl ammonium bromide with good to high yield. Also, SPSA was used as a catalyst for the synthesis of bis(indolyl)methanes in water. J. Heterocyclic Chem., (2011).
Ultrasound assisted green synthesis of bis(indol-3-yl)methanes catalyzed by 1-hexenesulphonic acid sodium salt
作者:Ratnadeep S. Joshi、Priyanka G. Mandhane、Santosh D. Diwakar、Charansingh H. Gill
DOI:10.1016/j.ultsonch.2009.08.015
日期:2010.2
1-Hexenesulphonic acidsodiumsalt as catalyst for green synthesis of bis(indol-3-yl)methanes was described. The reaction of indole with various aldehydes in water using ultrasound irradiation at ambient temperature for appropriate time using 1-hexenesulphonic acidsodiumsalt furnish the desired product in good to excellent yield. Utilization of aqueous medium, simple reaction conditions, isolation
Design, synthesis, characterization, and catalytic properties of g-C3N4-SO3H as an efficient nanosheet ionic liquid for one-pot synthesis of pyrazolo[3,4-b]pyridines and bis(indolyl)methanes
作者:Hojat Veisi、Pourya Mohammadi、Turan Ozturk
DOI:10.1016/j.molliq.2020.112625
日期:2020.4
and its structure was characterized using FTIR, TEM, XRD, CHNS elemental analysis and FESEM-EDX mapping. Catalytic activity of the liquid was studied for the syntheses of pyrazolo[3,4-b]pyridine and bis(indolyl)methane derivatives under moderate conditions. The catalyst was demonstrated to be reused at least 5 runs without considerable decrease in its activity. Some of the important advantages of the
制备了一种新型的磺酸官能化离子液体C 3 N 4(C 3 N 4 -SO 3 H(IL)),并通过FTIR,TEM,XRD,CHNS元素分析和FESEM-EDX映射对其结构进行了表征。研究了液体在中等条件下对吡唑并[3,4- b ]吡啶和双(吲哚基)甲烷衍生物的催化活性。催化剂被证明可以重复使用至少5次,而活性没有明显下降。事实证明,该方法的一些重要优点是产率高,后处理容易,反应时间短和底物范围广。
Development of Solvent-Free Ambient Mass Spectrometry for Green Chemistry Applications
作者:Pengyuan Liu、Amanda Forni、Hao Chen
DOI:10.1021/ac500527q
日期:2014.4.15
aldehydes with indoles as well as air- and moisture-sensitive reactions such as the oxidation of ferrocene and the condensation of pyrazoles with borohydride. Interestingly, besides the expected reactionproducts, the reaction intermediates such as the monopyrazolylborate ion were also observed, providing insightful information for reaction mechanisms. We believe that the presented solvent-free PESI-MS
Facile Synthesis of Bis(indolyl)methanes Using LaCl<sub>3</sub>· 7H<sub>2</sub>O as a Mild and Efficient Catalyst in Molten Salt Media
作者:Neda Seyedi、Kazem Saidi、Hojatollah Khabazzadeh
DOI:10.1080/00397910802604224
日期:2009.4.22
Abstract Efficient electrophilic substitution reaction of indole with various carbonyl compounds were carried out using a catalytic amount of LaCl3 · 7H2O in molten tetraethylammonium chloride as an ionic liquid to afford the corresponding bis(indolyl)methanes in excellent yields.