7361-94-6Relevant articles and documents
Pentafluorophenylammonium Triflate: A Mild, Efficient and Reusable Catalyst for the Synthesis of 2-Arylbenzothiazole and 2-Arylbenzothiazoline Derivatives in a Green Chemical Approach
Datta, Arup
, p. 95 - 102 (2021/03/29)
In this work, one pot, simple and environmentally benign effective synthesis of 2-substituted benzothiazole and benzothiazoline derivatives are described in presence of PFPAT (pentafluorophenylammonium triflate) catalyst in water successfully. A series of benzothiazole derivative were synthesized by the reaction between 2-aminothiophenol and various aldehydes in good yields. Recyclability of the catalyst is observed for four times without loss of its activity in aqueous medium.
Photoactivated aggregation-inducing luminescent probe having in-situ generation capability and preparation and application thereof
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Paragraph 0095; 0096; 0097; 0098, (2018/09/11)
The invention belongs to the technical field of biological imaging, and discloses a photoactivated aggregation-inducing luminescent probe having in-situ generation capability and a preparation and application thereof. The preparation method comprises the following steps: reacting a bis(2-(2--hydroxybenzylidene)amino)aryldisulfide compound with a thiol to obtain the photoactivated aggregation-inducing luminescent probe, which has the structural formula III. The photoactivated aggregation-inducing luminescent probe is gathered in a specific organelle to produce a 2-(2-hydroxyphenyl)benzothiazolecompound having aggregation-inducing luminescent properties by photooxidation. The photoactivated aggregation-inducing luminescent probe having in-situ generation capability can effectively overcomethe defects of aggregation-induced quenching of traditional fluorescent dyes, and realize the organelle-targeting specific photo-activated fluorescence imaging in living cells, and has the advantagesof easy preparation, long-term storage, high light activation efficiency, large Stokes displacement, and strong ability to enter the cells.
Synthesis of Chemically and Configurationally Stable Monofluoro Acylboronates: Effect of Ligand Structure on their Formation, Properties, and Reactivities
Noda, Hidetoshi,Bode, Jeffrey W.
supporting information, p. 3958 - 3966 (2015/04/14)
The recent disclosures of two classes of acylborons, potassium acyltrifluoroborates (KATs) and N-methyliminodiacetyl (MIDA) acylboronates, demonstrated that certain acylboron species can be both remarkably stable and uniquely reactive. Here we report new classes of ligands for acylboronates that have a significant influence on the formation, properties, and reactivities of acylboronates. Our systematic investigations identified a class of neutral, monofluoroboronates that can be prepared in a one step, gram-scale fashion from readily accessible KATs. These monofluoroboronates are stable to air, moisture, and silica gel chromatography and can be easily handled without any special precautions. X-ray crystallography, NMR spectroscopy, and HPLC studies showed that they are tetravalent, configurationally stable B-chiral acylboronates. Significantly, the ligands on the boronate allow for fine-tuning of the properties and reactivity of acylboronates. In amide-forming ligation with hydroxylamines under aqueous conditions, a considerable difference in reactivity was observed as a function of ligand structure. The solid-state structures suggested that subtle steric and conformational factors modulate the reactivities of the acylboronates.