87618-30-2Relevant academic research and scientific papers
New Routes to Phenalenones from 2,7-Dihydroxynaphthalene. X-Ray Crystal Structure of 4-(α-Hydroxybenzyl)-2-phenyl-6H-phenaleno-pyran-6-one
Carey, John L.,Thomson, Ronald H.,Cox, Philip J.
, p. 1267 - 1274 (2007/10/02)
9-Aryl-6-hydroxy-1H-phenalen-1-ones and 2-aryl-4-aroyl-6H-phenalenopyran-6-ones can be obtained by the reaction of 2,7-dihydroxyphenalene-1-carbaldehyde with acetophenones and by condensation of aroylacetaldehydes with 2,7-dihydroxynaphthalene under acid conditions.Aroylacetaldehydes may be involved in the former reaction also, arising by transfer of the formyl group from the naphthaldehyde to the acetophenone. 2,7-Dihydroxynaphthalene-1-carbaldehyde reacts with 2-hydroxyacetophenone to form 1H-naphthoxanthen-1-one.Interaction of naphthalene-2,7-dioxybismagnesium dibromide with cinnamaldehydes affords 4-benzyl-2-phenyl-6H-phenalenopyran-6-ones.
Colouring Matters of Australian Plants. XXIV. Haemofluorone B: New Synthetic Models and a Revised Structure
Chaffee, Alan L.,Cooke, Raymond G.,Dagley, Ian J.,Perlmutter, Patrick,Thomas, Raymond L.
, p. 587 - 598 (2007/10/02)
The occurrence of haemofluorone B in Anigozanthos rufus and Conostylis setosa has been confirmed.The revised structure 5,8,9-trihydroxy-3H-naphthoxanthen-3-one is now proposed for this pigment.Dihydroxyanigorufone has also been found in Conostylis setosa and the structure 9-(3,4-dihydroxyphenyl)-2-hydroxy-1H-phenalen-1-one has been confirmed by synthesis of the trimethyl ether.Some model arylphenalenones and naphthoxanthenones have been prepared from naphthylphenylpropanones and some unusual products have been obtained by photolysis of arylphenalenones and by the reactions of Grignard reagents with phenalenones.
