Synthesis of Polysubstituted Isoindolinones via Radical Cyclization of 1,3-Dicarbonyl Ugi-4CR Adducts Using Tetrabutylammonium Persulfate and TEMPO
作者:Andrés Borja-Miranda、Fabiola Valencia-Villegas、J. Armando Lujan-Montelongo、Luis A. Polindara-García
DOI:10.1021/acs.joc.0c02441
日期:2021.1.1
The development of an efficient method for the synthesis of polysubstituted isoindolinones from 1,3-dicarbonyl Ugi-4CR adducts, employing an aromatic radical cyclization process promoted by tetrabutylammonium persulfate and 2,2,6,6-tetramethyl-1-piperidine 1-oxyl (TEMPO), is described. The protocol allowed the construction of a library of isoindolinones bearing a congested carbon in good to excellent
Polyfunctionalised Nanoparticles Bearing Robust Gadolinium Surface Units for High Relaxivity Performance in MRI
作者:Nicolas G. Chabloz、Margot N. Wenzel、Hannah L. Perry、Il‐Chul Yoon、Susannah Molisso、Graeme J. Stasiuk、Daniel S. Elson、Anthony E. G. Cass、James D. E. T. Wilton‐Ely
DOI:10.1002/chem.201901820
日期:2019.8.14
on the surface. The one-pot synthetic route provides a straightforward and versatile way of preparing a range of multifunctional gold nanoparticles. The incorporation of additional surface units for biocompatibility (PEG and thioglucose units) and targeting (folic acid) leads to little detrimental effect on the high relaxivity observed for these non-toxic multifunctional materials. In addition to the
A new BODIPYâphosphane was synthesized and proved to be a versatile tool for imaging organometallic complexes. It also led to easy access to a new family of theranostics, featuring gold, ruthenium and osmium complexes. The compoundsâ cytotoxicity was tested on cancer cells, and their cell uptake was followed by fluorescence microscopy in vitro.
Fast and Stable Photochromic Oxazines for Fluorescence Switching
作者:Erhan Deniz、Massimiliano Tomasulo、Janet Cusido、Salvatore Sortino、Françisco M. Raymo
DOI:10.1021/la201062h
日期:2011.10.4
dyad, however, has a slow switching speed and poor fatigue resistance. To improve both parameters, we developed a new family of photochromicswitches based on the photoinduced opening and thermal closing of an oxazine ring. These compounds switch back and forth between ring-closed and -open isomers on nanosecond–microsecond timescales and tolerate thousands of switching cycles with no sign of degradation