Metal-Free Intermolecular Aminoarylation of Alkynes
作者:Pauline T. G. Rabet、Scott Boyd、Michael F. Greaney
DOI:10.1002/anie.201612445
日期:2017.4.3
A metal‐free aminoarylation of internalalkynes is described, yielding tetrasubstituted enaminoates. The transformation proceeds in good to excellent yields through a tandem conjugate addition/Smiles rearrangement involving aryl and heteroaryl sulfonamides. Substrate scope is very broad under simple, user‐friendly conditions, and the reaction can be used to easily access biologically active phenethylamine
We have established the Rh-catalyzed high-yielding and highly 1,3,5-selective [2+2+2] cycloaddition of push-pull internal alkynes. This reaction allows for the shape- and size-tunable synthesis of covalent organic cages (aryl ether cages) using push-pull internal diynes. Some aryl ether cages encapsulated isolated water molecules in their hydrophobic cavity by hydrogen bonding with the multiple ester