Preparation of azulenyllithium and magnesium reagents utilizing halogen–metal exchange reaction of several iodoazulenes with organolithium or magnesium ate complex

Preparation of several azulenyllithium and magnesium reagents was achieved by the halogen–metal exchange reaction of iodoazulenes with n-butyllithium or lithium tri(n-butyl)magnesate at low temperature and the synthetic application of the reagents was explored.