Journal
ADVANCED SYNTHESIS & CATALYSIS
Volume 364, Issue 10, Pages 1769-1774Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.202200127
Keywords
palladium; cross-coupling; carbolines; directed metalation; flow chemistry
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Funding
- University of Warwick's Institutional Research Support Fund
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A methodology for the synthesis of alpha- and beta-carbolines from fluoropyridines and 2-haloanilines is described. The procedure involves a four-step directed ortho-lithiation, zincation, Negishi cross-coupling, and intramolecular nucleophilic aromatic substitution, enabling the synthesis of a diverse set of functionalized carbolines. The generation of arylzinc intermediates in continuous flow has also been demonstrated.
A methodology for the synthesis of alpha- and beta-carbolines from fluoropyridines and 2-haloanilines is reported. This procedure consists of a four-step directed ortho-lithiation, zincation, Negishi cross-coupling, and intramolecular nucleophilic aromatic substitution, providing access to a diverse set of functionalized carbolines. While the procedure is applicable to batch conditions, the generation of arylzinc intermediates in continuous flow has been demonstrated.
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