90481-46-2Relevant academic research and scientific papers
A new oxorhenium(V) complex with benzothiazole derived ligand: Relative stability and global chemical reactivity indices
Bhattacharya, Arnab,Naskar, Jnan Prakash,Saha, Pinki,Ganguly, Rakesh,Saha, Baptu,Choudhury, Swagata Tarat,Chowdhury, Shubhamoy
, p. 168 - 175 (2016)
A new rhenium complex, cis-[ReO(btmp)PPh3Cl2] (2a) with 2-benzothiazolyl-5-methoxyphenol (Hbtmp) has been synthesized and characterized by means of FT-IR, UV-Vis, 1H NMR and elemental analyses. The structural parameters of
Discovery and optimization of a novel CNS penetrant series of mGlu4 PAMs based on a 1,4-thiazepane core with in vivo efficacy in a preclinical Parkinsonian model
Kent, Caitlin N.,Fulton, Mark G.,Stillwell, Kaylee J.,Dickerson, Jonathan W.,Loch, Matthew T.,Rodriguez, Alice L.,Blobaum, Anna L.,Boutaud, Olivier,Rook, Jerri L.,Niswender, Colleen M.,Conn, P. Jeffrey,Lindsley, Craig W.
, (2021)
A high throughput screen (HTS) identified a novel, but weak (EC50 = 6.2 μM, 97% Glu Max) mGlu4 PAM chemotype based on a 1,4-thiazepane core, VU0544412. Reaction development and chemical optimization delivered a potent mGlu4 PAM VU6022296 (EC50 = 32.8 nM, 108% Glu Max) with good CNS penetration (Kp = 0.45, Kp,uu = 0.70) and enantiopreference. Finally, VU6022296 displayed robust, dose-dependent efficacy in reversing Haloperidol-Induced Catalepsy (HIC), a rodent preclinical Parkinson's disease model.
Ruthenium silicate (RS-1) zeolite: novel heterogeneous efficient catalyst for synthesis of 2-arylbenzothiazole derivatives
Gadekar, Sachin P.,Lande, Machhindra K.
, p. 1253 - 1267 (2021/01/06)
Abstract: Mesoporous silicate and transition metal (Ru+3) containing mesoporous silicate materials or ruthenium silicate Ru+3/Si+4 where synthesis by using hydrothermal process. Mesoporous ruthenium silicate (RS-1) and zeo
Direct Oxygenation of C-H Bonds through Photoredox and Palladium Catalysis
Paul, Amrita,Shah, Sk. Sheriff,Shee, Maniklal,Singh, Amit Kumar,Singh, N. D. Pradeep
, p. 3426 - 3439 (2020/03/23)
This report presents the oxygenation of C-H bonds via the merger of photocatalysis and Pd catalysis. Herein, we describe the utilization of a photocatalyst to oxidize an organopalladium(II) intermediate to high-valent PdIII or PdIV intermediates, which promotes the formation of C-O bonds. The demonstrated method works efficiently with various directing groups, such as oxime ether and benzothiazole. The applicability of this direct C-O bond formation method is shown by synthesizing several metal complexes of 2-(benzo[d]thiazol-2-yl)phenol that can be used in organic light-emitting diodes and pharmaceuticals.
Metal-organic framework mediated expeditious synthesis of benzimidazole and benzothiazole derivatives through an oxidative cyclization pathway
Sankar, Velayudham,Karthik, Peramaiah,Neppolian, Bernaurdshaw,Sivakumar, Bitragunta
, p. 1021 - 1027 (2020/01/31)
Herein, we report the facile synthesis of various benzimidazoles and benzothiazoles by using the NH2-MIL-125(Ti) MOF as an efficient oxidant-free heterogeneous catalyst with good yield. Adsorption of the substrate on the NH2-MIL-125(Ti) MOF surface through electron deficient Ti4+ sites initiates the reaction. The broad substrate scope and high reusability of this catalyst are attractive for synthesis of a wide range of medicinally active benzimidazole and benzothiazole derivatives.
A turn-on fluorescent sensor for selective detection of hydrazine and its application in Arabidopsis thaliana
Qi, Ya-Lin,Chen, Jian,Zhang, Bo,Li, Hua,Li, Dong-Dong,Wang, Bao-Zhong,Yang, Yu-Shun,Zhu, Hai-Liang
, (2019/11/14)
In this work, a primary method was constructed for detecting hydrazine in plant, thus accomplished the closed-loop monitoring of hydrazine circulation within manufacture, environment, plants, animals and human. From a series of sensors, QYL-1 was selected
Metallaphotoredox-Mediated Csp2-H Hydroxylation of Arenes under Aerobic Conditions
Shah, Sk. Sheriff,Paul, Amrita,Bera, Manoranjan,Venkatesh, Yarra,Singh, N. D. Pradeep
supporting information, p. 5533 - 5536 (2018/09/21)
The direct hydroxylation of 2-arylpyridines and 2-arylbenzothiazoles via the merger of organic photoredox and metal catalysis is reported where 4CzIPN is used as the visible-light photocatalyst and Pd(OAc)2 as the metal catalyst. This method has been employed to synthesize organic molecules exhibiting excited-state intramolecular proton transfer properties for generating tunable luminescence responses.
Highly efficient AgNO3-catalyzed approach to 2-(benzo[d]azol-2-yl)phenols from salicylaldehydes with 2-aminothiophenol, 2-aminophenol and benzene-1,2-diamine
He, Xinwei,Wu, Yuhao,Jin, Wenjing,Wang, Xiaoshun,Wu, Cong,Shang, Yongjia
, (2018/02/13)
A new, convenient and efficient AgNO3-catalyzed strategy for the preparation of 2-(benzo[d]azol-2-yl)phenol derivatives in good to excellent yields (63–98%) is described. The reaction proceeds via condensation/intramolecular nucleophilic addition/oxidation process between substituted salicylaldehydes and 2-aminothiophenol, 2-aminophenol or benzene-1,2-diamine under mild reaction conditions. Notably, this reaction utilizes cheap AgNO3 as a readily available and low-cost benign oxidant at low catalyst loadings with excellent functional group tolerance.
Unified synthesis of mono/bis-arylated phenols via RhIII-catalyzed dehydrogenative coupling
Wu, Qian,Chen, Ying,Yan, Dingyuan,Zhang, Muyue,Lu, Yi,Sun, Wei-Yin,Zhao, Jing
, p. 169 - 173 (2016/12/28)
2,6-Bis-arylated phenols are rarely reported and are synthetically challenging. Directed C-H functionalization reactions, using a directing group (DG), might provide a convenient solution to their synthesis. However, this strategy usually results in partial cleavage of the directing group, preventing further/second C-H activation cascades. Herein we report a general strategy that allows for the precise control of the oxidation pathways so that directing groups can be either preserved or cleaved. We found that N-phenoxyacetamides could undergo ortho-arylation reactions with or without an external oxidant, yielding products with different oxidation states, notably the rare bis-arylated phenols. Notably, a unique rhodacycle intermediate was isolated, characterized by X-ray crystallography, and confirmed to be an active catalyst. Switching between internal and external oxidation could be a general strategy in diverse directed C-H functionalization reactions to realize bis-functionalized products.
Regioselective ortho-hydroxylation of 2-arylbenzothiazole via substrate directed C-H activation
Banerjee, Arghya,Bera, Anupam,Guin, Srimanta,Rout, Saroj Kumar,Patel, Bhisma K.
, p. 2175 - 2183 (2013/03/14)
An efficient protocol has been developed for the direct ortho-hydroxylation of 2-arylbenzothiazole using Pd(OAc)2 as the catalyst and either of DIB/AcOH or Oxone/TFA combinations under air atmosphere. Under both these conditions, the methodology tolerates a diverse array of substituents giving good to excellent yields of corresponding ortho-hydroxylated products. Regioselective hydroxylation is observed at the less sterically hindered site of the phenyl ring possessing substituents at its meta position.
