1207551-34-5Relevant articles and documents
Gold-catalyzed endo-cyclizations of 1,4-diynes to seven-membered ring heterocycles
Wilckens, Kristina,Uhlemann, Marcus,Czekelius, Constantin
supporting information; experimental part, p. 13323-13326+13275 (2010/06/15)
"Chemical Equation Presented" endo-Ruie for gold: A highly endoselective gold-catalyzed cycloisomerization of 1,4-diynes was developed. By employing electron-rich phosphines and N-heterocyclic carbenes as ligands, a number of 1,4-diynes could be cyclized