Decarboxylative (4+1) Oxidative Annulation of Malonate Monoesters with 2-Vinylpyridine Derivatives
作者:Shan Tang、Xinlong Gao、Aiwen Lei
DOI:10.1002/adsc.201600506
日期:2016.9.15
A novel N‐iodosuccinimide‐mediated decarboxylative (4+1) oxidative annulation between 2‐vinylpyridine derivatives and malonate monoesters was developed. It offers a new way to construct indolizine derivatives by utilizing malonate monoesters as a C1 unit. The alkyl 2,2‐diiodoacetate was found to be the active reaction intermediate during the transformation.
Enantioselective [3 + 2] Cycloaddition of Vinylcyclopropanes with Alkenyl <i>N</i>-Heteroarenes Enabled by Palladium Catalysis
作者:Wen-Dao Chu、Ya-Ting Wang、Tian-Tian Liang、Teng Long、Jia-Yu Zuo、Zhihui Shao、Bo Chen、Cheng-Yu He、Quan-Zhong Liu
DOI:10.1021/acs.orglett.2c01326
日期:2022.6.10
The first catalytic enantioselective [3 + 2] cycloaddition reaction between vinylcyclopropanes and alkenyl N-heteroarenes in the presence of LiBr and a Pd(0)/SEGPHOS complex was developed. LiBr plays a key role in improving the reactivity of alkenyl N-heteroarenes as a mild Lewis acid.
Computational molecular refinement to enhance enantioselectivity by reinforcing hydrogen bonding interactions in major reaction pathway
作者:Taishi Nakanishi、Masahiro Terada
DOI:10.1039/d3sc01637d
日期:——
other hand, the “interaction strategy” focuses on the stabilization of the TS of the major pathway in which an enhancement of the reaction rate is expected. To realize this strategy, we envisioned the TS stabilization of the major reaction pathway by reinforcing hydrogen bonding and adopted the chiral phosphoric acid-catalysed enantioselective Diels–Alder reaction of 2-vinylquinolines with dienylcarbamates
Nickel-Catalyzed Three-Component Alkylarylation of Alkenyl <i>N</i>-Heteroarenes
作者:Teng Long、Ya-Li Zeng、Zhi-Hong Dong、Shu Li、Jie Zhan、Sheng-Min Zeng、Jia-Li Qiu、Wen-Dao Chu、Quan-Zhong Liu
DOI:10.1021/acs.orglett.3c03474
日期:2023.11.24
A nickel-catalyzed three-component alkylarylation of alkenyl N-heteroarenes with α-bromocarboxylates and aryl boronic acids is reported. The protocol provides a new method to access a variety of N-heteroarene substituted diarylalkanes in moderate to good yields. It features mild reaction conditions, cheap nickel catalyst, readily available substrates, and broad substrate scope.