224-41-9Relevant articles and documents
Reductive Cyclization of Keto Acids to Polycyclic Aromatic Hydrocarbons by Hydroiodic Acid-Red Phosphorus
Platt, Karl L.,Oesch, Franz
, p. 2601 - 2603 (1981)
Hydroiodic acid-red phosphorus in acetic acid causes ring closure of o-naphthoylbenzoic acids and of o-naphthoylnaphthoic acids to yield benzanthracene and dibenzanthracenes
Morgan et al.
, p. 4347 (1970)
Cycloaromatization of α-oxoketene dithioacetals and β-oxodithioacetals with benzyl-,1-(naphthylmethyl) and 2-(naphthylmethyl)magnesium halides: Synthesis of condensed polynuclear aromatic hydrocarbons
Srinivasa Rao,Balu, Maliakel P.,Ila, Hiriyakkanavar,Junjappa, Hiriyakkanavar
, p. 3499 - 3510 (2007/10/02)
An efficient route for the synthesis of substituted naphthalenes, phenanthrenes and other polynuclear aromatic hydrocarbons has been developed. The methodology involves 1,2- (or sequential 1,4- and 1,2-) addition of either benzyl, 1-(naphthylmethyl) or 2-(naphthylmethyl) magnesium halides to α-oxoketene dithioacetals or β-oxodithioacetals followed by borontrifluoride etherate catalyzed cycloaromatization of the resulting carbinols.
The Syntheses of 4b,5a-Dihydrodibenzanthraoxirene and 4b,5a-Dihydro-5H-dibenzanthraazirine
Abu-Shqara, Elias,Blum, Jochanan
, p. 473 - 475 (2007/10/02)
The syntheses of the K-oxide and K-imine derivatives of dibenzanthracene (1) are described.The parent hydrocarbon 1 that was obtained as a side product in the Elbs pyrolysis of (2-methyl-1-naphthyl)-1'-naphthylmethanone (10) was oxidized to 3-(2-formylphenyl)-3-phenanthrenecarboxaldehyde (3).Treatment of the dialdehyde with tris(dimethylamino)phosphine gave 4b,5a-dihydrodibenzanthraoxirene (4).Reaction of the oxirane with sodium azide followed by triethyl phosphite cyclization of the mixture of trans azido-alcohols so formed, yielded mainly 4b,5a-dihydrodibenzanthraazirine (5).