Copper-Catalyzed Intermolecular Trifluoromethylazidation of Alkenes: Convenient Access to CF<sub>3</sub>-Containing Alkyl Azides
作者:Fei Wang、Xiaoxu Qi、Zhaoli Liang、Pinhong Chen、Guosheng Liu
DOI:10.1002/anie.201309991
日期:2014.2.10
A novel copper‐catalyzed intermoleculartrifluoromethylazidation of alkenes has been developed under mild reaction conditions. A variety of CF3‐containing organoazides were directly synthesized from a wide range of olefins, including activated and unactivated alkenes, and the resulting products can be easily transformed into the corresponding CF3‐containing amine derivatives.
Photoinduced, copper-catalyzed three components cyanofluoroalkylation of alkenes with fluoroalkyl iodides as fluoroalkylation reagents
作者:Quanping Guo、Mengran Wang、Yanfang Wang、Zhaoqing Xu、Rui Wang
DOI:10.1039/c7cc07128k
日期:——
In the past few years, Ru and Ir catalyzedphotoredox radical coupling reactions have been widely applied in organic synthesis. In contrast, the applications of Cu catalysts in photoredox organic transformations were limited. We here report the first example of photoinduced, Cu-catalyzed threecomponent cyanofluoroalkylation of alkenes by directly using fluoroalkyl iodides as fluoroalkylation reagents
Many abundant and highly bioactive naturalalkaloids contain an indolizidine skeleton. A simple, high yielding method to synthesize this scaffold from N-heterocycles was developed. A wide range of pyridines, quinolines and isoquinolines reacted with Donor-Acceptor (DA)-aminocyclopropanes via an ytterbium(III) catalyzed [3+2] annulation reaction to give tetrahydroindolizine derivatives. The products
Tropolonate Salts as Acyl-Transfer Catalysts under Thermal and Photochemical Conditions: Reaction Scope and Mechanistic Insights
作者:Demelza J. M. Lyons、Claire Empel、Domenic P. Pace、An H. Dinh、Binh Khanh Mai、Rene M. Koenigs、Thanh Vinh Nguyen
DOI:10.1021/acscatal.0c03702
日期:2020.11.6
strong nucleophilicity and photochemical activity, can promote the coupling reaction between alcohols and carboxylic acid anhydrides or chlorides to give products under thermal or blue light photochemical conditions. Kinetic studies and density functional theory calculations suggest interesting mechanistic insights for reactions promoted by this acyl-transfer catalytic system.