Further conversions of naphthoquinones into dinaphthofuranquinones
Abstract
1,4-Naphthoquinone is in part converted by aluminium chloride in carbon disulphide into the ortho-quinone (3; R = H). Thermal isomerisation of the binaphthyldiquinone (1) in 2-methoxynaphthalene gives the hydroxyquinone (4; R = H) but in 1-nitronaphthalene produces the dihydroxydiquinone (7; R = H).
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