1173883-99-2Relevant articles and documents
Pyridinium tribromide catalyzed condensation of indoles and aldehydes to form bisindolylalkanes
Yang, Qin,Yin, Zheng Lan,Ouyang, Ban Lai,Peng, Yi Yuan
, p. 515 - 518 (2011)
An efficient synthetic method for bis(indol-3-yl)alkane derivatives has been developed. In the presence of 5 mol% of pyridinium tribromide (PTB), the condensation of indoles and aldehydes proceeded smoothly under mild conditions, giving rise to the corresponding bis(indol-3-yl)alkanes in good to excellent yields.
Nitro-substituted 3,3′-bis(indolyl)methane-modified silica gel as a sorbent for solid-phase extraction of flavonoids
Wang, Na,Liang, Xiaojing,Li, Qian,Liao, Yuan,Shao, Shijun
, p. 15500 - 15506 (2015)
A novel solid-phase extraction (SPE) sorbent was synthesized by chemical immobilization of nitro-substituted 3,3′-bis(indolyl)methane onto pure silica. The nitro-substituted 3,3′-bis(indolyl)methane-modified silica was evaluated by elemental analysis (EA) and Fourier transform infrared spectroscopy (FT-IR). Coupled to high performance liquid chromatography (HPLC), the extraction performance of the sorbent was evaluated by using five flavonoids as model analytes. The results showed that the new sorbent could offer multiple intermolecular interactions, such as π-π, hydrophobic, and hydrogen bonding interactions. Several factors including the extraction material, sample solution pH, sample loading rate, eluent type, volume of eluent, elution rate, and volume of sample loading were optimized. Under the optimal conditions, the proposed method was applied for the analysis of five flavonoids in grape juice. Satisfactory linear ranges for flavonoids were obtained in the range of 10-200 ng mL-1 for myricetin, 5-200 ng mL-1 for quercetin and apigenin, and 1-200 ng mL-1 for luteolin and kaempferol, with correlation coefficients (R) ranging from 0.9908 to 0.9996. Limits of detection (LODs) were in the range of 0.5-10 ng mL-1. The recovery values of spiked grape juice ranged from 91.5% to 120.7% with relative standard deviations (RSDs) less than 9.12% (n = 5). As a novel solid-phase extraction sorbent, the nitro-substituted 3,3′-modified silica exhibited a higher extraction efficiency towards the tested compounds than diol-modified silica.
Facile access to bis(indolyl)methanes by copper-catalysed alkylation of indoles using alcohols under air
Nguyen, Ngoc-Khanh,Tran, Duc Long,Hung, Tran Quang,Le, Tra My,Son, Nguyen Thi,Trinh, Quang Thang,Dang, Tuan Thanh,Langer, Peter
supporting information, (2021/03/15)
Bis(3-indolyl)methanes (BIM) are important and present in the structure of many alkaloid and bioactive compounds (anti-inflammatory, anticancer, antiobesity, antimicrobial, etc.). Herein, we have reported an air stable and convenient Cu(OAc)2 c
Sulfonated Tetraphenylethylene-Based Hypercrosslinked Polymer as a Heterogeneous Catalyst for the Synthesis of Symmetrical Triarylmethanes via a Dual C-C Bond-Cleaving Path
Kalita, Gitumoni,Deka, Namrata,Paul, Dipankar,Thapa, Loknath,Dutta, Gitish K.,Chatterjee, Paresh Nath
supporting information, p. 304 - 308 (2020/12/14)
A sulfonic acid functionalized tetraphenylethylene-based hypercrosslinked polymer (THP-SO 3H) with a well-developed porous network and accessible sulfonic acid sites was synthesized and characterized by different analytical techniques. The cata
A facile iron-catalyzed dual C-C bond cleavage: An approach towards triarylmethanes
Paul, Dipankar,Khatua, Snehadrinarayan,Chatterjee, Paresh Nath
supporting information, p. 10056 - 10065 (2019/07/03)
A facile iron-catalyzed dual C-C bond cleaving reaction involving 1,3-dicarbonyl units along with electron-rich and sterically bulky arenes as efficient carbon-based leaving groups has been developed. The scope of the dual C-C bond breaking reaction was s
