Zhou Y, Akkarasereenon K, Liu L, Lin R, Song L, Tong R. Ecofriendly Protocol for
ipso-Bromination of Arylboronic Acids.
Org Lett 2024;
26:5151-5156. [PMID:
38864512 DOI:
10.1021/acs.orglett.4c01570]
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Abstract
We report a novel and environmentally friendly method for the ipso-bromination of arylboronic acids by exploiting the oxone/KBr system. We discovered that CuBr can catalyze the reaction and increase the yield from 63 to 97%. We believe that CuBr might catalyze the in situ generation of HOBr from oxone/KBr. The mild reaction condition permits tolerance of a diverse array of functional groups with exclusive regio- and chemoselectivity and allows low-cost large-scale reaction without explosion risk.
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