Olefin-Oriented Selective Synthesis of Linear and Branched N-Alkylated Heterocycles by Hydroamination
作者:Sushmita、Trapti Aggarwal、Kapil Mohan Saini、Akhilesh K. Verma
DOI:10.1002/ejoc.202000373
日期:2020.6.16
Selective base‐Mediated hydroamination of N‐heterocycles with olefins for the construction of Linear and branched N‐alkylated heterocycles is described. This protocol provided the synthesis of exclusive N‐alkylated product instead of the C‐3 Michael addition product.
A novel concept of Au-containing all-carbon 1,n-dipoles is advanced. From 1-(1-alkynyl) cyclopropyl ketones, Au-containing all-carbon 1,4-dipoles are presumably generated in situ and can efficiently participate in [4 + 2] annulation with dipolarophiles including indoles, various carbonyl compounds, imines, and silyl enol ethers. Polycyclic, fully substituted furans are readily synthesized under mild reaction conditions.