An Efficient Approach to Fused Indolines via a Copper(I)-Catalyzed Reaction of Sulfonyl Azide with 2-Ethynylaryl Methylenecyclopropane
作者:Shaoyu Li、Yong Luo、Jie Wu
DOI:10.1021/ol2011067
日期:2011.6.17
A cascade reaction of 2-ethynylaryl methylenecyclopropane with sulfonylazide catalyzed by copper(I) iodide under mild conditions is described, which provides a novel and efficient route for the generation of fused indolines.
Rhodium(II)-Catalyzed Intramolecular Cycloisomerizations of Methylenecyclopropanes with<i>N</i>-Sulfonyl 1,2,3-Triazoles
作者:Kai Chen、Zi-Zhong Zhu、Yong-Sheng Zhang、Xiang-Ying Tang、Min Shi
DOI:10.1002/anie.201402803
日期:2014.6.23
A novel rhodium(II)‐catalyzed tandem cycloisomerization of methylenecyclopropanes (MCPs) with N‐sulfonyl 1,2,3‐triazoles is disclosed. The reaction produces a series of highly functionalized polycyclic N heterocycles via a rhodium imino carbene intermediate. A distinct feature of this divergent synthesis is that different types of substrates control the reaction pathways. Moreover, several interesting
Palladium-Catalyzed Chemoselective Aminomethylative Cyclization and Aromatizing Allylic Amination: Access to Functionalized Naphthalenes
作者:Bangkui Yu、Houjian Yu、Hanmin Huang
DOI:10.1021/acs.orglett.0c03365
日期:2020.11.20
A palladium-catalyzedchemoselective aminomethylative cyclization and aromatizing allylic amination of enyne-tethered allylic alcohols with aminals is described. Under the reaction conditions, the cationic vinyl allylpalladium species undergoes selective migratory insertion of alkenes rather than reductive elimination with nucleophiles. This strategy provides an efficient and unique approach to the
Carbon Tetrachloride-Mediated Cyclization of (2-Alkynyl)arylaldimines for the Synthesis of Polychlorinated Nitrogen Heterocycles
作者:Hai-Yang Wang、Shi-Kai Tian
DOI:10.1021/acs.orglett.9b02010
日期:2019.7.19
mediate the 6-endo-dig cyclization of (2-alkynyl)arylaldimines, generated in situ from (2-alkynyl)arylaldehydes and primary amines, has been developed via formal insertion of C═N and C≡C bonds into a C–Cl bond under catalyst-free conditions, providing convenient access to a range of structurally diverse polychlorinated 1,2-dihydroisoquinolines and heteroarene-fused nitrogenheterocycles.