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DOI: 10.1055/s-0040-1707259
Halogen–Lithium Exchange of Sensitive (Hetero)aromatic Halides under Barbier Conditions in a Continuous Flow Set-Up
R. H. V. Nishimura thanks FAPESP (2018/08856-5) for financial support. N. Weidmann thanks the German Academic Scholarship Foundation for a fellowship. We thank the Deutsche Forschungsgemeinschaft and Ludwig-Maximilians-Universität München for financial support.


In memory of Prof. Dr. Kilian Muñiz
Abstract
A halogen–lithium exchange reaction of (hetero)aromatic halides performed in the presence of various electrophiles such as aldehydes, ketones, Weinreb amides, and imines using BuLi as exchange reagent and a commercially available flow set-up is reported. The organolithiums generated in situ were instantaneously trapped with various electrophiles (Barbier conditions) resulting in the formation of polyfunctional (hetero)arenes. This method enables the functionalization of (hetero)arenes containing highly sensitive functional groups such as esters, which are not tolerated in batch conditions.
Key words
heterocycles - flow chemistry - organolithiums - Barbier reaction - halogen–lithium exchangeSupporting Information
- Supporting information for this article is available online at https://doi.org/10.1055/s-0040-1707259.
- Supporting Information
Publication History
Received: 21 July 2020
Accepted after revision: 29 July 2020
Article published online:
02 September 2020
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