November 2023

Journal

K 2 CO 3 /18-Crown-6-Catalyzed Selective H/D Exchange of Heteroarenes with Bromide as a Removable Directing Group

By:
Zhang, Honghai
Journal Name:
Organic Letters
Page Number:
3055-3059
Volume:
25
Issue Number:
17
Publication Date:
November 9, 2023
View DOI Listing:
https://doi.org/10.1021/acs.orglett.3c00883

Abstract

The K2CO3/18-crown-6-catalyzed H/D exchange of heretoarenes in high atom % deuterium incorporation is disclosed. The use of a weak base as a catalyst leads to excellent site selectivity and broad functional group tolerance. Control experiments indicated that the use of bromide, which enhances the adjacent C–H bond reactivity, as a removable directing group is essential. Moreover, conversion of bromide to other functional groups is also performed to construct other useful deuterated compounds.


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