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meta-Selective C−H Borylation of Benzylamine-, Phenethylamine-, and Phenylpropylamine-Derived Amides Enabled by a Single Anionic Ligand

Published version
Peer-reviewed

Type

Article

Change log

Authors

Davis, HJ 
Genov, GR 
Phipps, RJ 

Abstract

Selective functionalization at the meta position of arenes remains a significant challenge. In this work, we demonstrate that a single anionic bipyridine ligand bearing a remote sulfonate group enables selective iridium-catalyzed borylation of a range of common amine-containing aromatic molecules at the arene meta position. We propose that this selectivity is the result of a key hydrogen bonding interaction between the substrate and catalyst. The scope of this meta-selective borylation is demonstrated on amides derived from benzylamines, phenethylamines and phenylpropylamines; amine-containing building blocks of great utility in many applications.

Description

Keywords

C-H-Aktivierung, Homogene Katalyse, Nichtkovalente Wechselwirkungen, Regioselektivität, Wasserstoffbrücken

Journal Title

Angewandte Chemie - International Edition

Conference Name

Journal ISSN

1433-7851
1521-3773

Volume Title

129

Publisher

John Wiley & Sons Ltd.
Sponsorship
Engineering and Physical Sciences Research Council (EP/N005422/1)
The Royal Society (uf130004)
EPSRC (1502977)
Engineering and Physical Sciences Research Council (EP/K039520/1)
We are grateful to the EPSRC and Pfizer for a CASE studentship (H.J.D.), the EPSRC (EP/N005422/1, G.R.G.) and the Royal Society for a University Research Fellowship (R.J.P.).