Iodine(III) reagent (ABX—N3)-induced intermolecular anti-Markovnikov hydroazidation of unactivated alkenes
作者:Xiaonan Li、Pinhong Chen、Guosheng Liu
DOI:10.1007/s11426-019-9628-9
日期:2019.11
hydroazidation of unactivated alkenes using ABX2014;N3 as an initiator has been developed at room temperature, wherein hydrogen azide (HN3) acts as both hydrogen and azidating agent. Notably, the HN3 reagent was generated from azidotrimethylsilane (TMSN3) and acetic acid in situ. The reaction itself displays broad substrate scope, good yields and excellent regioselectivities.
在室温下开发了使用ABX2014; N 3作为引发剂的未活化烯烃的反马尔科夫尼科夫加氢叠氮反应,其中叠氮化氢(HN 3)同时充当氢和叠氮化剂。值得注意的是,HN 3试剂是由叠氮基三甲基硅烷(TMSN 3)和乙酸原位生成的。该反应本身显示出宽的底物范围,良好的产率和优异的区域选择性。
Asymmetric Palladium‐Catalyzed Oxycarbonylation of Terminal Alkenes: Efficient Access to β‐Hydroxy Alkylcarboxylic Acids
作者:Bing Tian、Xiang Li、Pinhong Chen、Guosheng Liu
DOI:10.1002/anie.202104252
日期:2021.6.25
leading to high reactivity and excellent enantioselective control. Compared to the conventional methods, the reaction itself features alkenes as easily prepared starting materials, mild and operationally simple reaction conditions, and insensitivities to air and water. Moreover, this method allows for broad alkene substrate scope, excellent regio- and enantioselectivities, scalabilities and a wide array
NiH-catalyzed Csp3−Csp3 coupling of alkylhalides and alkyl alkenes has been established, providing tunable linear and branched products. Alkylhalides perform dual function as both coupling substrates and hydrogen sources in this reaction. Excellent functional group tolerance and broad substrate scope can be extended to late-stage modification of natural products and drug molecular structures.
Iron‐Catalyzed Reductive Cross‐Coupling of Alkyl Electrophiles with Olefins
作者:Xiaoyu Tong、Ze‐Peng Yang、Carlos E. Del Angel Aguilar、Gregory C. Fu
DOI:10.1002/anie.202306663
日期:2023.8.21
An iron catalyst achieves cross-couplingreactions of alkyl electrophiles wherein olefins, in the presence of a hydrosilane, are used in place of alkylmetal reagents to form alkyl–alkyl bonds. Mechanistic studies are consistent with the generation of an alkyl radical from the alkyl electrophile, as well as with reversibility for some of the elementary steps that precede carbon–carbon bond formation