Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 27, Issue 8, Pages 2628-2632Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202004724
Keywords
carbazoles; carbenes; diazoalkanes; gold; multi C-H functionalization
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Funding
- German Science Foundation
- Dean's Seed Fund of RWTH Aachen Foundation
- DAAD-PPP
- Universities Australia
- Australian Research Council [FT180100260, DP200100063]
- Projekt DEAL
- Australian Research Council [DP200100063, FT180100260] Funding Source: Australian Research Council
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The study demonstrates a multiple C-H functionalization reaction of carbazole heterocycles with diazoalkanes using gold catalysts, enabling the introduction of up to six carbene fragments or linking multiple carbazole units into a single molecule. A one-pot stepwise approach allows for the introduction of two different carbene fragments, facilitating orthogonal deprotection and straightforward derivatization.
Herein we describe a multiple C-H functionalization reaction of carbazole heterocycles with diazoalkanes. We show that gold catalysts play a distinct role in enabling a multiple C-H functionalization reaction to introduce up to six carbene fragments onto molecules containing multiple carbazole units or to link multiple carbazole units into a single molecule. A one-pot stepwise approach enables the introduction of two different carbene fragments to allow orthogonal deprotection and straightforward derivatization.
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