6265-89-0Relevant articles and documents
Photoinduced Heterogeneous C?H Arylation by a Reusable Hybrid Copper Catalyst
Choi, Isaac,Müller, Valentin,Lole, Gaurav,K?hler, Robert,Karius, Volker,Vi?l, Wolfgang,Jooss, Christian,Ackermann, Lutz
supporting information, p. 3509 - 3514 (2020/03/03)
Heterogeneous copper catalysis enabled photoinduced C?H arylations under exceedingly mild conditions at room temperature. The versatile hybrid copper catalyst provided step-economical access to arylated heteroarenes, terpenes and alkaloid natural products with various aryl halides. The hybrid copper catalyst could be reused without significant loss of catalytic efficacy. Detailed studies in terms of TEM, HRTEM and XPS analysis of the hybrid copper catalyst, among others, supported its outstanding stability and reusability.
New preparation method of 2-substituted benzothiazole compound
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Paragraph 0086; 0088, (2018/09/11)
The invention provides a new preparation method of a 2-substituted benzothiazole compound, relating to the field of organic synthesis chemistry. According to the new preparation method, in existence of catalyst, oxidant and additive, methylbenzene or a derivative thereof reacts with o-aminothiophenol through free radial reaction so as to prepare the 2-substituted benzothiazole compound in one step. The new method is an example but not limited and has the beneficial effects that methylbenzene or a derivative thereof and o-aminothiophenol construct a C-S bond and a C-N bond through the free radical method for the first time so as to generate the 2-substituted benzothiazole by coupling reaction in one step, and the new preparation method has advantages that the method is efficient, concise and environmentally friendly, raw materials are easy to obtain, and the product purity is high and the like, and the method has good application value and research prospects.
Elemental Sulfur-Mediated Decarboxylative Redox Cyclization Reaction: Copper-Catalyzed Synthesis of 2-Substituted Benzothiazoles
Wang, Xin,Li, Xiaotong,Hu, Renhe,Yang, Zhao,Gu, Ren,Ding, Sai,Li, Pengyi,Han, Shiqing
supporting information, p. 219 - 224 (2017/10/09)
A S 8 -mediated directed decarboxylative redox-cyclization strategy for the synthesis of 2-substituted benzothiazoles from o -iodoanilines, arylacetic acids, and elemental sulfur catalyzed by cheap copper metal has been developed. This reaction is operationally simple, ligand-free, compatible with a wide range of functional groups, and provides the desired products in good to excellent yields. In addition, a gram-scale experiment was carried out to furnish PMX 610, an antitumor drug.
Antidiabetic potential and enzyme kinetics of benzothiazole derivatives and their non-bonded interactions with α-glucosidase and α-amylase
Puranik, Ninad V.,Puntambekar, Hemalata M.,Srivastava, Pratibha
, p. 805 - 816 (2016/03/08)
Benzothiazole derivatives were synthesized and their antidiabetic potential evaluated using α-glucosidase, α-amylase, non-enzymatic glycosylation of hemoglobin and advanced glycation end product inhibition assays. Compound 3l showed low IC50 va
The immunomodulation potential of the synthetic derivatives of benzothiazoles: Implications in immune system disorders through in vitro and in silico studies
Khan, Khalid Mohammed,Mesaik, Mohammad A.,Abdalla, Omer M.,Rahim, Fazal,Soomro, Samreen,Halim, Sobia A.,Mustafa, Ghulam,Ambreen, Nida,Khalid, Ahmad Shukralla,Taha, Muhammad,Perveen, Shahnaz,Alam, Muhammad Tanveer,Hameed, Abdul,Ul-Haq, Zaheer,Ullah, Hayat,Rehman, Zia Ur,Siddiqui, Rafat Ali,Voelter, Wolfgang
, p. 21 - 28 (2015/12/05)
Benzothiazole and its natural or synthetic derivatives have been used as precursors for several pharmacological agents for neuroprotective, anti-bacterial, and anti-allergic activities. The objecctive of the present study was to evaluate effects of benzot
A simple and eco-friendly process catalyzed by montmorillonite K-10, with air as oxidant, for synthesis of 2-substituted benzothiazoles
Chen, Guo Feng,Xiao, Nan,Yang, Jing Sen,Li, Hong Yang,Chen, Bao Hua,Han, Li Fen
, p. 5159 - 5166 (2015/07/08)
Simple and eco-friendly synthesis of 2-substituted benzothiazoles is described. The reaction is performed in absolute ethanol at room temperature, using a catalytic amount of montmorillonite K-10, and with continuous bubbling of air as oxidant. Simplicity
Antileishmanial activities of benzothiazole derivatives
Rahim, Fazal,Samreen,Taha, Muhammad,Saad, Syed Muhammad,Perveen, Shahnaz,Khan, Momin,Alam, Muhammad Tanveer,Khan, Khalid Mohammed,Choudhary, M. Iqbal
, p. 157 - 161 (2015/05/20)
Benzothiazole derivatives 1-22 were synthesized from 2-aminothiophenol and all synthetic compounds were screened for in vitro antileishmanial activity. These compound showed different types activities against leishmania with IC50 values ranging
Trichloroisocyanuric Acid/Triphenylphosphine-Mediated Synthesis of Benzimidazoles, Benzoxazoles, and Benzothiazoles
Rezazadeh, Soodabeh,Akhlaghinia, Batool,Razavi, Nasrin
, p. 145 - 155 (2015/05/05)
A new and efficient method for preparation of benzimidazoles, benzoxazoles, and benzothiazoles from reactions of different carboxylic acids with o-phenylenediamine, o-aminophenol, and o-aminothiophenol in the presence of triphenylphosphine/trichloroisocyanuric acid system is presented. The desired products have been characterised on the basis of spectral (infrared, NMR, mass spectrometry) data, and the mechanism of their formation is proposed. The remarkable advantages are the inexpensive and readily available reagent, simple procedure, mild conditions, and good-to-excellent yields.
Iron(II) bromide-catalyzed oxidative coupling of benzylamines with ortho-substituted anilines: Synthesis of 1,3-benzazoles
Gopalaiah, Kovuru,Chandrudu, Sankala Naga
, p. 5015 - 5023 (2015/03/03)
An iron(II) bromide-catalyzed oxidative coupling of benzylamines with 2-amino/hydroxy/mercapto-anilines has been developed, allowing the synthesis of a diversity of substituted 1,3-benzazoles in good to excellent yields. This transformation is compatible with a wide range of functional groups. The method is practical, economical and employs molecular oxygen as an oxidant.
IMMUNOSUPPRESSIVE COMPOUNDS
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Paragraph 0023, (2015/01/07)
The invention feature series of benzothiazole derivatives as potent immunosuppressive and antiinflammatory agents. Eight compounds 2, 4, 5, 8, 9, 10, 12, and 18 showed potent inhibitory activity on PHA-activated T-cell proliferation. Compounds 2, 4, 8, and 18 were found to have a potent inhibitory activity with IC50 values ranging 50 values 1.9, 5050), respectively.