Switchable divergent synthesis in gold-catalyzed difunctionalizations of o-alkynylbenzenesulfonamides with aryldiazonium salts
Gold-catalyzed difunctionalizations of o-alkynylbenzenesulfonamides with aryldiazonium salts are reported herein. Upon irradiation with the blue LEDs, benzosultam products were formed via aminoarylation accompanied by the release of N2. Without irradiation, aryldiazonium salts were engaged as effici...
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| Hauptverfasser: | , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
27 September 2021
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| In: |
Organic letters
Year: 2021, Jahrgang: 23, Heft: 20, Pages: 7713-7717 |
| ISSN: | 1523-7052 |
| DOI: | 10.1021/acs.orglett.1c02621 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/acs.orglett.1c02621
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| Verfasserangaben: | Jun Li, Hongwei Shi, Shan Zhang, Matthias Rudolph, Frank Rominger, and A. Stephen K. Hashmi |
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| 520 | |a Gold-catalyzed difunctionalizations of o-alkynylbenzenesulfonamides with aryldiazonium salts are reported herein. Upon irradiation with the blue LEDs, benzosultam products were formed via aminoarylation accompanied by the release of N2. Without irradiation, aryldiazonium salts were engaged as efficient electrophiles, facilitating electrophilic deaurations of the vinyl-Au(I) intermediates, followed by tautomerization to give the N-aryl-substituted α-imino (E)-hydrazones. The regioselectivities of 6-endo-dig and 5-exo-dig cyclizations were excellent. | ||
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