Reactivity of 3,6-dimethoxy-3,6-dimethylcyclohexa-1,4-diene (Part 2). Regioselective arylation of electron-rich aromatic compounds

Article abstract of DOI:10.1016/S0040-4020(01)80926-1

The reaction of 3,6-dimethoxy-3,6-dimethylcyclohexa-1,4-diene (1) with electron-rich heterocycles (furan, thiophene, pyrrole, 2-methylfuran, indole) and 1,3,5-trimethoxybenzene in the presence of catalytic amounts of zinc dichloride or concentrated sulfur