Ir and Rh complex-catalyzed intramolecular alkyne–alkyne couplings with carbon monoxide and isocyanides
作者:Takanori Shibata、Koji Yamashita、Emi Katayama、Kentaro Takagi
DOI:10.1016/s0040-4020(02)01122-5
日期:2002.10
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 iminocyclopentadienes was achieved by portionwise additions of isocyanides to a solution of diynes and Rh catalyst ([RhCl(cod)]2).
瓦斯卡络合物(IrCl(CO)(PPh 3)2)或IrCl(cod)(dppp)催化二氧化碳的分子内[2 + 2 + 1]环加成反应,并获得了良好或高收率的环戊二烯酮。亚氨基环戊二烯的第一个催化合成是通过将异氰酸酯分批添加到二炔和Rh催化剂([RhCl(cod)] 2)的溶液中来实现的。