Efficient Syntheses and the Nucleophilic Substitution of Dibromo- and Tribromo-azulenequinones: Differences in Reactivity between Five- and Seven-membered Ring Moieties
Abstract
Efficient syntheses and the nucleophilic substitution of dibromoazulenequinones 5a and 5b and tribromoazulenequinones 6a and 6b were carried out: the five-membered ring portion of the molecule is proved to be more reactive than the seven-membered ring.