Dual Gold/Silver Catalysis: 3-Alkynylpyrroles via a Tandem C(sp <sup>2</sup> )–H Alkynylation/N-Alkynylation
)-H alkynylation/N-alkynylation of enamines with hypervalent iodine(III) reagents for the synthesis of 3-alkynylpyrroles is reported. This cooperative Au/Ag catalytic system enables the one-step construction of multisubstituted pyrrole frameworks under mild conditions. Mechanistic studies allowed the capture of the initially formed Au(I) species and support a pathway involving an alkynyl Au(III) intermediate together with a silver-assisted C-H activation process. The cascade sequence efficiently forges C-C and C-N bonds, providing 3-alkynylpyrroles in good yields with broad functional group tolerance. Gram-scale synthesis and further derivatization of the products highlight the practicality and synthetic utility of this transformation.
Authors
- Peng Shen (ORCID: https://orcid.org/0000-0001-9801-0271)
- Jie Yang (ORCID: https://orcid.org/0000-0003-4801-7162)
- Chunyu Han (ORCID: https://orcid.org/0009-0002-9757-0204)
- Rui Qin (ORCID: https://orcid.org/0009-0009-7051-8570)
- Mengyu Liu
- Peifeng Li
Institutions
- CAS Key Laboratory of Urban Pollutant Conversion (CN)
- Hubei Normal University (CN)
Publication Details
- Journal
- Organic Letters
- Published
- 2026-05-23
- DOI
- https://doi.org/10.1021/acs.orglett.6c01692
- Primary Topic
- Catalytic Alkyne Reactions
- Type
- article
- Field-Weighted Citation Impact
- 0.00