(EN) The invention concerns chemoluminescent acridinium derivatives of formula (I) in which R1 to R13 are substituents not hindering the expression of chemoluminescence, provided that at least one of the substituents R12 and R13 comprises, as single element or element binding with an acridium derivative, an atom other than carbon.(FR) La présente invention concerne des dérivés d'acridinium chimioluminescents de formule (I) dans laquelle R1 à R13 sont des substituants n'empêchant pas l'expression de la chimioluminescence, étant entendu que l'un au moins des substituants R12 et R13 comporte, comme élément unique ou comme élément de liaison au dérivé d'acridinium, un atome autre que le carbone.
Nucleophilic and Radical Heptafluoroisopropoxylation with Redox‐Active Reagents
作者:Chao‐Lai Tong、Xiu‐Hua Xu、Feng‐Ling Qing
DOI:10.1002/anie.202109572
日期:2021.10.11
heptafluoroisopropoxylation reactions through the invention of a series of redox-active N-OCF(CF3)2 reagents. These reagents were readily prepared from the oxidative heptafluoroisopropylation of hydroxylamines with AgCF(CF3)2. The substitutions on the nitrogen atom significantly affected the properties and reactivities of N-OCF(CF3)2 reagents. Accordingly, two types of N-OCF(CF3)2 reagents including N-OCF(CF3)2
Oxime ethers are of great importance in the field of pharmaceutical chemicals and polymer materials. Herein, we have developed a straightforward synthetic method to prepare oxime ethers starting from tetrahydrofuran or other cyclic ethers and various oxime derivatives with tetrabromomethane as a mediator. A plausible mechanism indicates that tetrabromomethane is first cleaved by visible light irradiation