267890-12-0Relevant articles and documents
Gold promoted arylative cyclization of alkynoic acids with arenediazonium salts
Carrillo-Arcos, Ulises A.,Porcel, Susana
, p. 1837 - 1842 (2018/03/23)
Alkynoic acids derived from salicylic acid and analogues undergo arylative cyclization with arenediazonium salts promoted by gold in the absence of external ligands. The reaction is thermally induced and proceeds even in the absence of light. A difference in regioselectivity has been found compared with that observed in the cycloisomerization process of the same type of compounds.
Silver(I) and gold(I)-promoted synthesis of alkylidene lactones and 2H-chromenes from salicylic and anthranilic acid derivatives
Nolla-Saltiel, Roberto,Robles-Marín, Elvis,Porcel, Susana
, p. 4484 - 4488 (2014/08/05)
Ag(I) and Au(I) efficiently catalyze the cycloisomerization of terminal alkynoic acids into methylene seven-membered ring lactones. Depending on the metal, divergent reaction pathways were found for non terminal alkynoic acids. While Ag(I) led to lactones, Au(I) led to 2H-chromenes coming from the hydroarylation of the alkyne.
A highly regio- And stereoselective synthesis of (Z)-3-arylidene-2,3-dihydro-5H-1,4-benzodioxepin-5-ones and (Z)-3-arylidene1,2,3,5-tetrahydro-4,1-benzoxazepin-5-ones through palladium-copper catalysis
Chaudhuri, Gopeswar,Kundu, Nitya G.
, p. 775 - 779 (2007/10/03)
Sodium 2-(prop-2′-ynyloxy)benzoate 1a reacted with the aryl iodides 2-10 in the presence of bis(triphenylphosphine)palladium(II) chloride, cuprous iodide and triethylamine in CH3CN-DMF to yield the disubstituted alkynes 11-19 in good yields (48
