Issue 97, 2021

Ir-catalyzed proximal and distal C–H borylation of arenes

Abstract

Over the past two decades, the C–H bond activation and functionalization reaction has been known as a prevailing method for the construction of carbon–carbon and carbon–heteroatom bonds using various transition metal catalysts. In this context, the iridium-catalyzed C–H bond activation and borylation reaction is one of the most valued methods. However, the major challenge in these borylation reactions is how to control the proximal (ortho) and distal (meta and para) selectivity. Interestingly, while so many approaches are now available for the proximal ortho selective borylation of arenes, borylation at the distal meta and or para position of arenes remains still challenging. Only a few approaches have been reported so far in the literature employing iridium catalysis. In this feature article, we have demonstrated some of the recent discoveries from our laboratories for the proximal (ortho) and distal (meta and para) selective borylation reactions. Moreover, some of the recent catalyst engineering discoveries for the selective proximal ortho borylation reactions for a diverse class of substrates have also been discussed. The discussion part of several other pioneering reports is limited due to the lack of scope of this feature article.

Graphical abstract: Ir-catalyzed proximal and distal C–H borylation of arenes

Article information

Article type
Feature Article
Submitted
10 sen 2021
Accepted
13 okt 2021
First published
16 noy 2021

Chem. Commun., 2021,57, 13059-13074

Ir-catalyzed proximal and distal C–H borylation of arenes

C. Haldar, M. E. Hoque, J. Chaturvedi, M. M. M. Hassan and B. Chattopadhyay, Chem. Commun., 2021, 57, 13059 DOI: 10.1039/D1CC05104K

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