FLUORENE-TYPE COMPOUND, PHOTOPOLYMERIZATION INITIATOR COMPRISING SAID FLUORENE-TYPE COMPOUND, AND PHOTOSENSITIVE COMPOSITION CONTAINING SAID PHOTOPOLYMERIZATION INITIATOR
申请人:Daito Chemix Corporation
公开号:US20150259321A1
公开(公告)日:2015-09-17
According to an embodiment of the present invention, there is provided a novel fluorene-based compound and a photopolymerization initiator using the fluorene-based compound. The fluorene-based compound according to an embodiment of the present invention is represented by the general formula (1). A photopolymerization initiator having additionally high sensitivity can be provided by using the fluorene-based compound. In addition, a photopolymerization initiator that can impart additionally excellent characteristics can be provided by appropriately selecting, for example, a substituent.
Perfluoroalkylative pyridylation of alkenes<i>via</i>4-cyanopyridine-boryl radicals
作者:Jia Cao、Guoqiang Wang、Liuzhou Gao、Hui Chen、Xueting Liu、Xu Cheng、Shuhua Li
DOI:10.1039/c8sc05237a
日期:——
developed via a combination of computational and experimental studies. Density functional theory calculations and control experiments indicate that the homolysis of Rf−X (X = Br, I) bonds by the 4-cyanopyridine-boryl radicals in situ generated from 4-cyanopyridine and B2pin2 is the key step. Sequential addition of Rf radicals to alkenes and the selective cross-coupling of the resulting alkyl radicals and
Diastereoselective Access to Tetracyclic Eight‐Membered Lactams through a Dearomative Heck Reaction and an Alkylative Ring‐Opening Driven by Photoexcited Spiroindolines
作者:Jianhui Qiao、Wenxuan Zhao、Yong Liang、Zhu‐Jun Yao、Shaozhong Wang
DOI:10.1002/chem.202005369
日期:2021.4.7
benzoannulated eight‐membered lactams. The spiroindolines were prepared from tetrahydro‐β‐carbolines by a dearomative Heck reaction. Mechanistic experimental studies on the alkylative ring opening suggested that a photoredox pathway was involved, in which the spiroindoline performed as both reagent and photosensitizer. DFT calculations showed that the radical addition toward a cyclic alkene was the key to
An efficient palladium‐catalyzed Heck‐type reaction of fluoroalkyl halides, including perfluoroalkyl bromides, trifluoromethyl iodides, and difluoroalkyl bromides, has been developed. The reaction proceeds under mild reaction conditions with high efficiency and broad substrate scope, and provides a general and straightforward access to fluoroalkylated alkenes which are of interest in life and material