77670-53-2Relevant articles and documents
Gold imidazolium-based ionic liquids, efficient catalysts for cycloisomerization of γ-acetylenic carboxylic acids
Nea?u, Florentina,Parvulescu, Vasile I.,Michelet, Véronique,Gênet, Jean-Pierre,Goguet, Alexandre,Hardacre, Christopher
, p. 102 - 106 (2009)
Ionic liquid stabilized gold(iii) chloride is shown to be a very active catalyst in the cyclization of sterically hindered and unhindered acetylenic carboxylic acid substrates even in the absence of a base. The Royal Society of Chemistry and the Centre Na
Smaller, faster, better: Modular synthesis of unsymmetrical ammonium salt-tagged NHC-gold(i) complexes and their application as recyclable catalysts in water
Belger, Katrin,Krause, Norbert
supporting information, p. 8556 - 8560 (2015/08/06)
Facile access towards a small library of unsymmetrical ammonium salt-tagged N-heterocyclic carbene gold(i) complexes is described, and their application as recyclable catalysts in cyclization reactions of acetylenic carboxylic acids and amides to lactones and lactams, respectively, in aqueous media is demonstrated. Catalyst 1ab was applied in the synthesis of 2-epi-clausemarine A (16).
Synthesis of enol lactones via Cu(I)-catalyzed intramolecular O-vinylation of carboxylic acids
Sun, Changhul,Fang, Yewen,Li, Shuang,Zhang, Yue,Zhao, Qlwu,Zhu, Shana,Li, Chaozhong
supporting information; experimental part, p. 4084 - 4087 (2009/12/06)
With the catalysis of Cul/trans-W,W-dimethylcyclohexane-1,2-diamine, a number of carboxylic acids underwent efficient intramolecular O-vinylation with vinyl bromides leading to the synthesis of the corresponding five- and six-membered enol lactones. The same catalytic system also led to the efficient cycloisomerization of alkynoic acids.
