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- Title
Gold‐Catalyzed Cyclisation by 1,4‐Dioxidation.
- Authors
Claus, Vanessa; Molinari, Lise; Büllmann, Simon; Thusek, Jean; Rudolph, Matthias; Rominger, Frank; Hashmi, A. Stephen K.
- Abstract
Amide‐substituted diynes were cyclized in the presence of a cationic gold catalyst and an external nucleophile leading to 1‐indenones and 1‐iminoindenones. The electron‐donating features of the nitrogen atom enable the formation of a reactive ketene iminium ion, which can be trapped by either diphenyl sulfoxide or anthranil as nucleophiles in a subsequent oxidation step, providing substituted inden‐1‐on‐3‐carboxamides.
- Subjects
GOLD catalysts; OXIDATION; IONS; ATOMS
- Publication
Chemistry - A European Journal, 2019, Vol 25, Issue 40, p9385
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201900996