Asymmetric remote C-H borylation of internal alkenes via alkene isomerization.

Abstract:

:Recent years have witnessed the growing interest in the remote functionalization of alkenes for it offers a strategy to activate the challenging C-H bonds distant from the initiation point via alkene isomerization/functionalization. However, the catalytic enantioselective isomerization/functionalization with one single transition metal catalyst remains rare. Here we report a highly regio- and enantioselective cobalt-catalyzed remote C-H bond borylation of internal alkenes via sequential alkene isomerization/hydroboration. A chiral ligand featured twisted pincer, anionic, and non-rigid characters is designed and used for this transformation. This methodology, which is operationally simple using low catalyst loading without additional activator, shows excellent enantioselectivity and can be used to convert various internal alkenes with regio- and stereoisomers to valuable chiral secondary organoboronates with good functional group tolerance.

journal_name

Nat Commun

journal_title

Nature communications

authors

Chen X,Cheng Z,Guo J,Lu Z

doi

10.1038/s41467-018-06240-y

subject

Has Abstract

pub_date

2018-09-26 00:00:00

pages

3939

issue

1

issn

2041-1723

pii

10.1038/s41467-018-06240-y

journal_volume

9

pub_type

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