191-53-7

Usage

InChI:InChI=1/C34H18/c1-3-11-25-21(9-1)23-13-5-7-19-15-18-28-32-26-12-4-2-10-22(26)24-14-6-8-20-16-17-27(34(32)30(20)24)31(25)33(28)29(19)23/h1-18H

Upstream product

• 82-05-3 7H-benz[d,e]anthracene-7-one 
• 199-94-0 7H-benz[d,e]anthracene 
• 81-96-9 3-bromobenzanthrone 

Downstream Products

• 191-87-7 Dibenzoperylen 

Relevant academic research and scientific papers

Large PAHs by reductive peri-peri "dimerization" of phenalenones

(formula presented) Reactions of phenalenone (2), benzanthrone (3), and naphthanthrone (4) with a low-valent titanium reagent (TiCl4/LiAlH4/THF) gave peropyrene (1), tetrabenzo[a,Cd,j,lm]perylene (6), and dibenzo[jk,uv]dinaphtho[2,1,8,7-defg;2′,1′,8′,7′-opqr] pentacene (10), respectively. The syntheses of the LPAHs 6 and 10 were regioselective. An unsymmetrical pathway of reductive peri-peri "dimerization" of the phenalenones leading to peropyrene-type LPAHs was proposed. Ab initio DFT B3LYP/6-311G** calculations indicated that D2h-1, the most stable conformation, resembles the Clar picture of 1.

Synthesis and Physical Properties of Azapolycyclic Hydrocarbons. Part 1. Preparation of 1-Azabenzanthrone and its Condensation Products and their Structural Determination

Preparation of 1-azabenzanthrone (27) was carried out by making use of a German Patent reaction.An improved procedure gave (27) easily and rapidly.Compound (27) underwent self-condensation via a zinc-catalysed method or an alkali-fusion procedure.The zinc-catalysed condensation product was separated into four isomers; 3,12-diazatetrabenzoperylene (7), 3,15-diazabenzophenanthropentaphene (4), 5,17-diazadibenzonaphthopentaphene (3), and 5,10-diazabenzophenalenopentaphene (6).The major component was (3).The reduced product after alkali-fusion condensation of (27) was separated into four isomers; (7), (3), (6), and 5,14-diazadinaphthoperylene (2).The major component was (2).The structures of the isomers were assigned from their oxidation products, m.p., u.v.-visible, i.r., and mass spectra.According to our assignments, (6) and possibly 5,14-diazatetrabenzoperylene (10) are new structural isomers of fused nanocyclic compounds whose parent aromatic hydrocarbons have not been prepared, though (10) has not actually been isolated.

a, cd, j, lm.

The rate of crystallization from the amorphous state of Tetrabenzo left bracket a, cd, j, lm right bracket perylene(TBP) film under various temperature conditions was examined as a function of the purity of the specimen. On the basis of the absorption and fluorescence spectra of TBP film, the rate of crystallization of TBP film evaporated at room temperature was found to be decreased with increasing impurity of the specimen.