Metallacyclobutene formation from a substituted-acetylene complex of cobalt and an isocyanide. Regioselectivity and rearrangement
Abstract
The regioselectivity observed in the formation of the iminocobaltacyclobutenes (3) from the substituted-acetylene complex (1) and the isocyanide (2) has been shown to be due to the electronic effect of substituents on the acetylene; skeletal rearrangement of the metallacycle had proved that the complexes (3) are the kinetically controlled products.