192-51-8

Basic information

• Product Name: DIBENZO[B,DEF]CHRYSENE
• Synonyms: dibenzo[fg,op]naphthacene;3,4:8,9-DIBENZPYRENE;1,2:6,7-DIBENZPYRENE;DIBENZ(A,H) PYRENE;DIBENZO[E,L]PYRENE;DIBENZO[B,DEF]CHRYSENE;DIBENZO(A,H)PYRENE;DIBENZO(E,1)PYRENE
• CAS NO: 192-51-8
• Molecular Formula: C₂₄H₁₄
• Molecular Weight: 302.37
• Mol File: 192-51-8.mol
• Article Data: 6

Chemical Properties

• Boiling Point: 378.4°C (rough estimate)
• Flash Point: 282 °C
• Appearance: /
• Density: 0.9220 (rough estimate)
• Vapor Pressure: 1.12E-11mmHg at 25°C
• Refractive Index: 1.5220 (estimate)
• CAS DataBase Reference: DIBENZO[B,DEF]CHRYSENE(CAS DataBase Reference)
• NIST Chemistry Reference: DIBENZO[B,DEF]CHRYSENE(192-51-8)
• EPA Substance Registry System: DIBENZO[B,DEF]CHRYSENE(192-51-8)

Safety Data

• Hazardous Substances Data: 192-51-8(Hazardous Substances Data)

Usage

Uses

Dibenzo[e,l]pyrene is a polycyclic aromatic hydrocarbon (PAH). It is an isomer of Dibenzo[a,l]pyrene (D416945) which is confirmed to be highly carcinogenic. Dibenzo[e,l]pyrene is also used as a standard in determination of polycyclic aromatic hydrocarbons (PAH’s).

Carcinogenicity

Dibenzo[e,l]pyrene was negative for carcinogenicity in one study and in one initiation–- promotion study on mouse skin.

InChI:InChI=1/C24H14/c1-2-8-16-15(7-1)19-11-5-13-21-17-9-3-4-10-18(17)22-14-6-12-20(16)24(22)23(19)21/h1-14H

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Relevant articles and documents

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Modular metal-free catalytic radical annulation of cyclic diaryliodoniums to access π-extended arenes

Polycyclic aromatic hydrocarbons (PAHs) are of increasing importance in the advanced material field. Cyclic diaryliodonium salts are non-toxic and environmentally benign arylating reagents. Here, we describe an alkylamine-mediated free radical intramolecular annulation to access PAHs under environmentally friendly conditions. On modulating substituents and their positions in the iodoniums, the free radical reaction controllably underwent three types of cyclization including ring contraction and ring switch to form tricyclic and tetracyclic frameworks of PAHs. Preliminary mechanistic studies implied that alkylamines initiated a radical pathway to complete the cyclization efficiently. Moreover, these acquired products were further converted into diverse complex graphene segments.

An aryl substituted tris of compounds of preparation method and its application

The invention discloses an aryl substituted tris of compounds of preparation method and its application. The preparation method process is: in formula I compound as a raw material, under protection of inert gas, in the organic solution, the participation of the inorganic base, to control the reaction temperature 70 - 160 °C, raw material process for the catalytic reaction to obtain aryl substituted tris benzene compound; type I structure of the compound is: Wherein R1 For the H atom, alkyl, alkoxy, haloalkyl oxy, F or Cl, R2 For the H atom, alkyl, alkoxy, haloalkyl oxy, F or Cl, and R1 And R2 In at least one is a H atom. This synthetic route has not seen the literature reports, and the cost of raw material; unit of simple operation, low equipment requirements, is suitable for the rapid construction of tris of compounds and fused ring compound.