Although Rh(I)Cl(CO)(cpd) (cpd = cyclopentadienone) complexes were identified more than 40 years ago, their exact structures have not been determined because of the polymeric nature of these complexes. We determined the structure of [Rh(I)Cl(CO)(cpd)]2, which was formed by the reaction of [Rh(cod)Cl]2 with a 1,6-diyne under CO. In addition, based on determination of the structure of the [Rh(I)Cl(CO)(cpd)]2 complex, we identified a new catalytic tandem reaction—the Rh-catalyzed [2+2+1] carbonylative cycloaddition of phenoxide-substituted diynes and Claisen rearrangement.
虽然 Rh(I)Cl(CO)(cpd)(cpd =
环戊二烯酮)络合物早在 40 多年前就已被发现,但由于这些络合物具有聚合性质,因此其确切结构尚未确定。我们确定了[Rh(I)Cl(CO)(cpd)]2 的结构,它是由[Rh(cod)Cl]2 与 1,6-二炔在 CO 下反应生成的。此外,根据[Rh(I)Cl(CO)(cpd)]2 复合物结构的测定,我们发现了一种新的催化串联反应--Rh 催化的苯氧基取代二炔的[2+2+1]羰基环加成和克莱森重排。