Design and Synthesis of an MOF Thermometer with High Sensitivity in the Physiological Temperature Range
摘要:
An important result of research on mixed-lanthanide metalorganic frameworks (M'LnMOFs) is the realization of highly sensitive ratiometric luminescent thermometers. Here, we report the design and synthesis of the new M'LnMOF Tb(0.80)Eu(0.20)BPDA with high relative sensitivity in the physiological temperature regime (298-318 K). The emission intensity and luminescence lifetime were investigated and compared to those of existing materials. It was found that the temperature-dependent luminescence properties of Tb(0.80)Eu(0.20)BPDA are strongly associated with the distribution of the energy levels of the ligand. Such a property can be useful in the design of highly sensitive M'LnMOF thermometers.
Regioselective Conversion of Arenes to<i>N</i>-aryl-1,2,3-triazoles Using CH Borylation
作者:Rajavel Srinivasan、Anthony G. Coyne、Chris Abell
DOI:10.1002/chem.201403021
日期:2014.9.8
A one‐pot protocol for the synthesis of N‐aryl 1,2,3‐triazoles from arenes by an iridium‐catalyzed CH borylation/copper catalyzed azidation/click sequence is described. 1 mol % of Cu(OTf)2 was found to efficiently catalyze both the azidation and the click reaction. The applicability of this method is demonstrated by the late‐stage chemoselective installation of 1,2,3‐triazole moiety into unactivated
Synthesis of Pinacol Arylboronates from Aromatic Amines: A Metal-Free Transformation
作者:Di Qiu、Liang Jin、Zhitong Zheng、He Meng、Fanyang Mo、Xi Wang、Yan Zhang、Jianbo Wang
DOI:10.1021/jo3018878
日期:2013.3.1
A metal-free borylation process based on Sandmeyer-type transformation using arylamines derivatives as the substrates has been developed. Through optimization of the reaction conditions, this novel conversion can be successfully applied to a wide range of aromatic amines, affording borylation products in moderate to good yields. Various functionalized arylboronates, which are difficult to access by
申请人:Technische Universität Carolo-Wilhelmina zu
Braunschweig
公开号:EP1972338A1
公开(公告)日:2008-09-24
The present invention relates to the use of molecules having a spacer unit, linker and recognition unit(s) for the treatment and prevention of various diseases, disorders and conditions. In particular, the present invention provides compounds useful in preventing or treating infectious diseases and diseases, disorders or conditions related thereto. Further, the present invention relates to methods for preventing or treating diseases, disorders or conditions involving recognition and binding of carbohydrate structures.
Enantioselective γ-C(sp<sup>3</sup>)–H Activation of Alkyl Amines via Pd(II)/Pd(0) Catalysis
作者:Qian Shao、Qing-Feng Wu、Jian He、Jin-Quan Yu
DOI:10.1021/jacs.8b01094
日期:2018.4.25
Pd(II)-catalyzed enantioselective γ-C(sp3)-H cross-coupling of alkyl amines via desymmetrization and kinetic resolution has been realized for the first time using chiral acetyl-protected aminomethyl oxazoline ligands (APAO). A diverse range of aryl- and vinyl-boron reagents can be used as coupling partners. The chiral γ-arylated alkylamine products are further transformed into chiral 2-substituted 1,2,3,4-
Highly Selective and Divergent Acyl and Aryl Cross-Couplings of Amides via Ir-Catalyzed C–H Borylation/N–C(O) Activation
作者:Pengcheng Gao、Michal Szostak
DOI:10.1021/acs.orglett.0c02105
日期:2020.8.7
Herein, we demonstrate that amides can be readily coupled with nonactivated arenes via sequential Ir-catalyzed C–H borylation/N–C(O) activation. This methodology provides facile access to biaryl ketones and biaryls by the sterically controlled Ir-catalyzed C–H borylation and divergent acyl and decarbonylative amide N–C(O) and C–C activation. The methodology diverts the traditional acylation and arylation