Late-Stage C–H Alkylation of Heterocycles and 1,4-Quinones via Oxidative Homolysis of 1,4-Dihydropyridines
作者:Álvaro Gutiérrez-Bonet、Camille Remeur、Jennifer K. Matsui、Gary A. Molander
DOI:10.1021/jacs.7b05899
日期:2017.9.6
heterocyclic bases and 1,4-quinones. DHPs are readily prepared from aldehydes, and considering that aldehydes normally require harsh reaction conditions to take part in such transformations, with mixtures of alkylated and acylated products often being obtained, this net decarbonylative alkylation approach becomes particularly useful. The present method takes place under mild reaction conditions and requires
作者:Taian Huang、Zhanxiang Chen、Yang Zou、Shaolong Gong、Chuluo Yang
DOI:10.1016/j.dyepig.2021.109192
日期:2021.4
Azulene ring-containing compound, its use, and an organic photoelectric device including the same
申请人:Shanghai Tianma AM-OLED Co., Ltd.
公开号:US20200377467A1
公开(公告)日:2020-12-03
The present disclosure provides an azulene ring-containing compound, its use, and an organic photoelectric device including the same. The azulene ring-containing compound is a compound comprising a structure of Formula I. The organic photoelectric device includes an anode, a cathode, and one or more organic thin film layers located between the anode and the cathode; and at least one of the organic thin film layers contains the above-mentioned azulene ring-containing compound comprising the structure of Formula I. The azulene ring-containing compound provided by the present disclosure has an energy level difference ΔEst≤0.3 eV between the lowest singlet state S
1
and the lowest triplet state T
1
, and has a light-emitting mechanism of a thermally activated delayed fluorescent material, and can be used as a thermally activated delayed fluorescent material for organic photoelectric device, so that the light-emitting efficiency of the device is improved.
Regioselective C–H bond functionalizations of acridines using organozinc reagents
作者:Isao Hyodo、Mamoru Tobisu、Naoto Chatani
DOI:10.1039/c1cc16582h
日期:——
Despite the recent advance in CâH bond functionalization chemistry, the CâH bonds in the acridine ring system, which is an important scaffold in medicinal and material science, have met with limited success, due, in part, to the lack of activated CâH bonds adjacent to the ring nitrogen atom. Herein, several protocols that can effect the regioselective arylation and alkylation of acridines at the C-4 and C-9 positions are described.