Abstract
A method for the construction of various thio-bridged compounds is developed using readily available o-(trimethylsilyl)aryl triflates as a source of aryne precursor, catalyzed by simple Pd(dba)2/dppe complex. This operationally simple and modular protocol allows thio-bridged compound via C(sp2)-C(sp2) and C(sp2)-C(sp3) bond formation in promising yields with a broad substrate scope. The key part is in situ generation of an aryne from o-(trimethylsilyl)aryl triflates and their subsequent intermolecular annulation.
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Acknowledgments
We are thankful to IISER-Pune, and IIT-Bombay for the spectral analysis. We express our gratitude to Veer Narmad South Gujarat University, Surat and Government Science College, Vankal to provide necessary laboratory facilities. We gratefully acknowledge Bhavik S. Makwana and Prakashsingh M. Chauhan for their suggestion on laboratory setup and reaction mechanism.
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Morja, M.I., Chikhalia, K.H. Palladium(0)-catalyzed aryne annulation: a powerful strategy for the synthesis of thio-bridged compounds. Mol Divers 27, 299–311 (2023). https://doi.org/10.1007/s11030-022-10424-6
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DOI: https://doi.org/10.1007/s11030-022-10424-6