Pd-catalyzed homologation of arylboronic acids as a platform for the diversity-orientated synthesis of benzylic C–X bonds
Abstract
We report a synthetic platform for the formation of benzylic C–X bonds. Benzylboronic acid pinacol (Bpin) esters are useful synthetic intermediates but are commercially uncommon, leading to preparations that typically rely upon stoichiometric metalation. Pd-catalyzed formal homologation of arylboronic acids provides access to these compounds that, in turn, allow the formation of C–C, C–O, and C–N bonds from Pd- and Cu-mediated cross-coupling or oxidative processes. This affords a wide variety of benzylic alcohols, diarylmethanes, benzyl amines, and benzyl ethers. Limitations are disclosed and the utility is further demonstrated by the generation of analogues of meclizine.
Citation
Bastick , K & Watson , A J B 2023 , ' Pd-catalyzed homologation of arylboronic acids as a platform for the diversity-orientated synthesis of benzylic C–X bonds ' , Synlett , vol. 34 , pp. A-F . https://doi.org/10.1055/a-2117-9878
Publication
Synlett
Status
Peer reviewed
ISSN
0936-5214Type
Journal article
Rights
Copyright © 2023 The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by/4.0/).
Description
Funding: K.A.C.B thanks the Engineering and Physical Sciences Research Council (EPSRC, Grant Number EP/W007517/1) and the University of St Andrews for a PhD studentship. A.J.B.W. thanks the Leverhulme Trust for a Research Fellowship and the EPSRC Programme Grant ‘Boron: Beyond the Reagent’ for support. Leverhulme Trust (RF-202-014), University of St Andrews Engineering and PhysicalSciences Research Council (EP/W007517/1).Collections
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