Mild, visible light-mediated decarboxylation of aryl carboxylic acids to access aryl radicals
作者:L. Candish、M. Freitag、T. Gensch、F. Glorius
DOI:10.1039/c6sc05533h
日期:——
Herein we present the first example of aryl radical formation via the visible light-mediated decarboxylation of aryl carboxylic acids using photoredox catalysis.
There is provided a polycyclic aromatic compound having a single boron-nitrogen bond and including a core structure of Core A, Core B, or Core C In the formulas: Q1 and Q2 are the same or different and are a single bond, O, S, NR12, BR12, CR13R14, or SiR13R14; and R12 - R14 are the same or different and are alkyl, carbocyclic aryl, heteroaryl, or substituted derivatives thereof.
Construction of Chiral Tetraorganosilicons by Tandem Desymmetrization of Silacyclobutanes/Intermolecular Dehydrogenative Silylation
作者:Qing-Wei Zhang、Kun An、Li-Chuan Liu、Qi Zhang、Huifang Guo、Wei He
DOI:10.1002/anie.201609022
日期:2017.1.19
desymmetrization–dehydrogenative silylations. A wide array of dibenzosiloles with stereogenic quaternary silicon centers were obtained in good yields and enantioselectivities up to 93 % ee. Chiral TMS‐segphos was found to be a superior ligand in terms of reactivity and enantioselectivity.