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Strain‐Promoted 1,3‐Dithiolium‐4‐olates/Alkyne Cycloaddition

Ramar Arun Kumar 1 Manas Pattanayak 1 Expédite Yen-Pon 1 Jijy Elyian 1 Karine Porte 1 Sabrina Bernard 1 Margaux Riomet 1 Pierre Thuéry 2 Davide Audisio 1, * Frédéric Taran 1, * 
* Corresponding author
2 LCMCE - Laboratoire de Chimie Moléculaire et de Catalyse pour l'Energie (ex LCCEF)
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
Abstract : We report the reactivity of mesoionic 1,3-dithiolium-4-olates towards strained alkynes leading to thiophene cycloaddition products. In the process, we discovered the potential of these dipoles towards orthogonal reaction with azides allowing efficient double ligation reactions. We also developed a versatile process to access benzo[c]thiophenes in an unprecedented divergent fashion, which provides a new entry to unconventional poly-aromatic thiophenes.
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Ramar Arun Kumar, Manas Pattanayak, Expédite Yen-Pon, Jijy Elyian, Karine Porte, et al.. Strain‐Promoted 1,3‐Dithiolium‐4‐olates/Alkyne Cycloaddition. Angewandte Chemie, Wiley-VCH Verlag, 2019, 131, pp.14686-14690. ⟨10.1002/ange.201908052⟩. ⟨cea-02265800⟩

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