Enantioselective Alkylamination of Unactivated Alkenes under Copper Catalysis
作者:Zibo Bai、Heng Zhang、Hao Wang、Hanrui Yu、Gong Chen、Gang He
DOI:10.1021/jacs.0c12333
日期:2021.1.20
An enantioselective addition reaction of various alkyl groups to unactivated internal alkenes under Cu catalysis has been developed. The reaction uses amide-linked aminoquinoline as the directing group, 4-alkyl Hantzsch esters as the donor of alkyl radicals, and rarely used biaryl diphosphine oxide as a chiral ligand. β-lactams featuring two contiguous stereocenters at Cβ and the β substituent can
Development of an Alkyne Analogue of the de Mayo Reaction: Synthesis of Medium‐Sized Carbacycles and Cyclohepta[
<i>b</i>
]indoles
作者:David Tymann、Dina Christina Tymann、Ulf Bednarzick、Ljuba Iovkova‐Berends、Julia Rehbein、Martin Hiersemann
DOI:10.1002/anie.201808578
日期:2018.11.19
herein is a conceptionally novel photochemically triggered cascade process to these scaffolds. Key to the cascading ring‐expansion process is an unprecedented intramolecular alkyne analogue of the deMayoreaction.