Starting from diverse alkene-tethered aryl iodides and O-benzoyl-hydroxylamines, the enantioselective reductive cross-electrophilic 1,2-carboamination of unactivatedalkenes was achieved using a chiral pyrox/nickel complex as the catalyst. This mild, modular, and practical protocol provides rapid access to a variety of β-chiral amines with an enantioenriched aryl-substituted quaternary carbon center
Palladium-Catalyzed Three-Component Carbocarbonation of Arynes: Expeditious Synthesis of <i>o</i>-Alkylated Arylacrylates and Stilbenes
作者:Tuanli Yao、Jiazhe Hui、Tao Liu、Tao Li
DOI:10.1021/acs.joc.0c02994
日期:2021.4.16
A palladium-catalyzed multicomponentreactioninvolving olefin-tethered aryl iodides, arynes, and electrophilic alkenes has been developed for straightforward synthesis of o-alkylated arylacrylates and stilbenes through tandem intramolecular Heck cyclization/aryne dicarbofunctionalization.
Palladium-catalyzed alkene-directed cross-coupling of aryliodide with another aryl halide through C-H arylation opens a unique avenue for unsymmetrical biaryl-derived molecules. However, homo-coupling of aryliodides often erodes the overall synthetic efficiency. Reported herein is a highly chemoselective Pd0 -catalyzed alkyne-directed cross-coupling of aryliodides with bromophenols, which was subsequently
Palladium(0)-Catalyzed Heck Reaction/CH Activation/Amination Sequence with Diaziridinone: A Facile Approach to Indolines
作者:Huaiji Zheng、Yingguang Zhu、Yian Shi
DOI:10.1002/anie.201405365
日期:2014.10.13
Indolines are important moieties present in various biologically significant molecules and have attracted considerable attention in synthetic chemistry. This paper describes a Heckreaction/CHactivation/aminationsequence for forming indolines using di‐tert‐butyldiaziridinone. The reaction process likely proceeds via a pallada(II)cycle, which is converted into an indoline by oxidative addition to
二氢吲哚是存在于各种具有生物学意义的分子中的重要部分,在合成化学中引起了相当大的关注。本文描述了使用二叔丁基二氮丙啶酮形成二氢吲哚的 Heck 反应/C H 活化/胺化序列。该反应过程可能通过钯(II)循环进行,该循环通过氧化加成到二氮丙啶酮和两个随后的 C N 键形成转化为二氢吲哚。
Synthesis of functionalized 3-isochromanones <i>via</i> metal-free intramolecular alkoxylation-initiated cascade cyclization
作者:Ying-Qi Zhang、Xin-Qi Zhu、Yin Xu、Hao-Zhen Bu、Jia-Le Wang、Tong-Yi Zhai、Jin-Mei Zhou、Long-Wu Ye
DOI:10.1039/c9gc01030k
日期:——
A metal-free intramolecular alkoxylation-initiated cascade cyclization of allyl ether-tethered ynamides has been developed. Various highly functionalized 3-isochromanones can be obtained in generally good to excellent yields under mild reaction conditions. Moreover, this asymmetric cyclization has also been realized via a stereocontrolled [3,3] rearrangement by employing a traceless chiral directing