Copper-Catalyzed Regio- and Enantioselective Hydroallylation of 1-Trifluoromethylalkenes: Effect of Crown Ether
作者:Yuki Kojima、Masahiro Miura、Koji Hirano
DOI:10.1021/acscatal.1c02947
日期:2021.9.17
A Cu-catalyzedregio- and enantioselective hydroallylation of 1-trifluoromethylalkenes with hydrosilanes and allylic chlorides has been developed. An in situ generated CuH species undergoes the hydrocupration regio- and enantioselectively to form a chiral α-CF3 alkylcopper intermediate, which then leads to the optically active hydroallylated product. The key to success is the use of not only an appropriate
Regioselective radical hydroboration of electron-deficient alkenes: synthesis of α-boryl functionalized molecules
作者:Yun-Shuai Huang、Jie Wang、Wan-Xin Zheng、Feng-Lian Zhang、You-Jie Yu、Min Zheng、Xiaoguo Zhou、Yi-Feng Wang
DOI:10.1039/c9cc06506g
日期:——
various electron-deficient alkenes is achieved by the employment of an NHC–boryl radical. A range of α-borylated nitriles, trifluoromethyl molecules, phosphonates, sulfones, and gem-diboron compounds have been prepared from readily available startingmaterials. Further synthetic applications of these products are also demonstrated.
Palladium Catalyzed Vinyltrifluoromethylation of Aryl Halides through Decarboxylative Cross-Coupling with 2-(Trifluoromethyl)acrylic Acid
作者:Subban Kathiravan、Ian A. Nicholls
DOI:10.1021/acs.orglett.5b00551
日期:2015.4.17
An efficient Pd-catalyzed stereoselective vinyltrifluoromethylation of aryl halides, through decarboxylative cross-coupling with 2-(trifluoromethyl)acrylic acid is described. The ready availability of the starting materials, the high level of functional group tolerance, and excellent E/Z selectivity make this protocol a safe and operationally convenient strategy for efficient synthesis of vinyltrifluoromethyl
Radical-Dual-Difunctionalization and Trifluoromethylative Decarboxylation of Two Different Alkenes
作者:Jing Zhao、Ren-Xiang Liu、Cui-Ping Luo、Luo Yang
DOI:10.1021/acs.orglett.0c02267
日期:2020.9.4
From a single alkene to twodifferentalkenes! A convenient Fe-catalyzed A–D–A–T-type radical-dual-difunctionalization and cross-coupling of twodifferentalkenes to provide chain elongated and trifluoromethylated aromatic alkenes has been developed.
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