Regiodivergent DH or HD Addition to Alkenes: Deuterohydrogenation versus Hydrodeuterogenation
作者:Luomo Li、Gerhard Hilt
DOI:10.1021/acs.orglett.0c00213
日期:2020.2.21
utilizing selectively deuterated dihydroaromatic compounds, which were generated by cobalt catalysis. The reaction was initiated by catalytic amounts of BF3·Et2O by abstracting hydride or deuteride ions from the respective dihydroaromatic reducing agents and led to a highly regioselective incorporation of deuterium and hydrogen at the desired positions of the starting material.
Highly efficient iodine-catalyzed hydroarylation of arenes with styrenes
作者:Cheng-Ming Chu、Wan-Ju Huang、Ju-Tsung Liu、Ching-Fa Yao
DOI:10.1016/j.tetlet.2007.07.178
日期:2007.9
Iodine mediates the hydroarylation of styrenes with arenes and heteroarenes to afford 1,1-diarylalkanes in good to high yields. Details regarding the substrate scope and selectivity of this hydroarylation reaction are discussed.
Nickel‐Catalyzed Electrochemical Reductive Relay Cross‐Coupling of Alkyl Halides to Aryl Halides
作者:Ke‐Jin Jiao、Dong Liu、Hong‐Xing Ma、Hui Qiu、Ping Fang、Tian‐Sheng Mei
DOI:10.1002/anie.201912753
日期:2020.4.16
A highly regioselective Ni-catalyzed electrochemical reductive relay cross-coupling between an aryl halide and an alkylhalide has been developed in an undivided cell. Various functional groups are tolerated under these mild reaction conditions, which provides an alternative approach for the synthesis of 1,1-diarylalkanes.
The FeBr3-Catalyzed Transfer Hydrogenation of Styrene Derivatives under Mild Reaction Conditions
作者:Gerhard Hilt、Sascha Kail
DOI:10.1055/s-0042-1751572
日期:——
The transfer hydrogenation of alkenes was realized by using a simple transition-metal compound (FeBr3) and 1,4-cyclohexadiene (1,4-CHD) as the hydrogen donor. The conversion of a number of di- and trisubstituted alkenes was investigated, and even a tetrasubstituted alkene was successfully converted. Compared with previously published work with the more expensive InBr3, the reaction times were considerably
采用简单的过渡金属化合物(FeBr3)和1,4-环己二烯(1,4-CHD)作为氢供体实现了烯烃的转移加氢。研究了许多二取代和三取代烯烃的转化,甚至四取代烯烃也被成功转化。与之前发表的使用更昂贵的 InBr3 的工作相比,反应时间大大缩短,并且可以应用明显更温和的反应条件。有趣的是,在 1 bar 压力下,以分子氢作为化学计量还原剂,也完成了 1,4-CHD 的催化转化。