Synthesis of 2-Substituted Benzothiazoles by Visible Light-Driven Photoredox Catalysis
作者:Chunghyeon Yu、Kyungyub Lee、Youngmin You、Eun Jin Cho
DOI:10.1002/adsc.201300376
日期:2013.5.17
An efficient method for synthesis of the widely applicable 2‐substituted benzothiazoles has been developed. The process requires only 0.1 mol% [Ru(bpy)3Cl2], O2, and visible light irradiation with substrates: 2‐aminothiophenol and a variety of aldehydes. We established an oxidative quenching of the photoredox catalyst as being the key process in this photoelectrocatalytic cycle.
Compounds for non-invasive measurement of aggregates of amyloid peptides
申请人:Technische Universität München
公开号:EP2218464A1
公开(公告)日:2010-08-18
The invention relates to the provision of compounds, methods for producing them, and their use for imaging and quantification of aggregates of amyloid peptides in vivo. In a preferred aspect of the invention, a tracer is administered to humans and displays enrichment in the areas that are containing amyloid plaques. Tracers of the invention can be used for in vivo visualization and quantification of aggregates of amyloid peptides in patients affected diseases characterized in the generation of aggregates of amyloid peptides, for example familial or sporadic Alzheimer's disease and type II diabetes. Tracers of the invention can be used for monitoring effects of amyloid-modulating therapies of patients affected with diseases characterized in the generation of aggregates of amyloid peptides, for example familial or sporadic Alzheimer's disease and type II diabetes.
The condensation reaction of 2-aminothiophenol with aldehydes catalyzed by 1 mol % trichloroisocyanuric acid (TCCA) was investigated. As a result, a set of diverse 2-arylbenzothiazoles were obtained in good to excellent yields at room temperature.
Efficient Synthesis of 2-Arylbenzothiazole Derivatives with the Aid of a Low-Valent Titanium Reagent
作者:Da-Qing Shi、Shao-Feng Rong、Guo-Lan Dou
DOI:10.1080/00397910903227230
日期:2010.7.12
A novel and facile synthesis of 2-arylbenzothiazole derivatives was accomplished in good yields via the novel reductive cyclization of bis-(2-benzalaminophenyl)disulfide promoted by the TiCl4/Sm system. The advantages of this new method are the easily accessible starting materials, short reaction time, and moderate to good yields.
Microwave-assisted one-pot synthesis of benzothiazole and benzoxazole libraries as analgesic agents
作者:C PRAVEEN、A NANDAKUMAR、P DHEENKUMAR、D MURALIDHARAN、P T PERUMAL
DOI:10.1007/s12039-012-0251-3
日期:2012.5
Microwave-assisted synthesis of benzothiazole and benzoxazole libraries via PIFA promoted cyclocondensation of 2-aminothiophenols/2-aminophenols with aldehydes under one-pot condition in good to excellent yields was achieved. Twenty compounds have been investigated for their analgesic activity and showed moderate to good activity.