Deltacyclene formation catalysed by cationic Co(II) complexes
作者:P. Binger、S. Albus
DOI:10.1016/0022-328x(95)05377-2
日期:1995.5
Alkynes and norbornadiene can be codimerized in a [2 + 2 +2] Homo-Diels-Alder reaction, yielding deltacyclenes. Instead of reduced Co species as used in former cases, Co(II)-complexes activated with Lewis acids such as ZnI2 or ZnCl2 are used to obtain the same products. The [CoI(PPh3)2]+ cation appears to be the catalytically active compound.