121573-71-5Relevant articles and documents
Ir and Rh complex-catalyzed intramolecular alkyne-alkyne couplings with carbon monoxide and isocyanides
Shibata, Takanori,Yamashita, Koji,Katayama, Emi,Takagi, Kentaro
, p. 8661 - 8667 (2007/10/03)
Intramolecular [2+2+1] cycloaddition of diynes with carbon monoxide was catalyzed by Vaska's complex (IrCl(CO)(PPh3)2) or IrCl(cod)(dppp), and cyclopentadienones were obtained in good to high yields. The first catalytic synthesis of