20532-03-0

Basic information

• Product Name: 9-phenanthren-9-ylphenanthrene
• Synonyms: 9-phenanthren-9-ylphenanthrene;9,9'-BIPHENANTHRENE
• CAS NO: 20532-03-0
• Molecular Formula: C₂₈H₁₈
• Molecular Weight: 354.4425
• Mol File: 20532-03-0.mol
• Article Data: 9

Chemical Properties

• Melting Point: 188-189 °C(Solv: acetic acid (64-19-7))
• Boiling Point: 544.4°Cat760mmHg
• Flash Point: 280.6°C
• Appearance: /
• Density: 1.217g/cm³
• CAS DataBase Reference: 9-phenanthren-9-ylphenanthrene(CAS DataBase Reference)
• NIST Chemistry Reference: 9-phenanthren-9-ylphenanthrene(20532-03-0)
• EPA Substance Registry System: 9-phenanthren-9-ylphenanthrene(20532-03-0)

Safety Data

• Hazardous Substances Data: 20532-03-0(Hazardous Substances Data)

Upstream product

• 85-01-8 phenanthrene 
• 3401-47-6 1-bromo-2-methoxynaphthalene 
• 68572-87-2 9-phenanthrenylboronic acid 
• 573-17-1 9-bromophenanthrene 

Downstream Products

• 96276-97-0 2'-Methyl-2,9-phenanthrylmethyl-biphenyl 

Relevant articles and documents

Pd-catalyzed oxidative homocoupling of arylboronic acids in WEPA: A sustainable access to symmetrical biaryls under added base and ligand-free ambient conditions

Symmetrical and unsymmetrical biaryls comprises a diverse class of biologically eloquent organic compounds. We herein report, a quick and eco-friendly protocol for the synthesis of biaryls by an oxidative (aerobic) homocoupling of arylboronic acids (ABAs) using Pd(OAc)2 in water extract of pomogranate ash (WEPA) as an efficient agro-waste(bio)-derived aqueous (basic) media. The reactions were executed at ambient aerobic conditions in the absence of external base and ligand to result symmetrical biaryls in excellent yields. The use of renewable media with an effective exploitation of waste, short reaction times, excellent yields of products, easy separation of the products, unnecessating the external base, oxidant, ligand or volatile organic solvents and ambient reaction conditions are the vital insights of the present protocol.

A Copper-Based Metal-Organic Framework Acts as a Bifunctional Catalyst for the Homocoupling of Arylboronic Acids and Epoxidation of Olefins

A copper(I)-based metal-organic framework ({[Cu2Br2(pypz)]na.nH2O} (Cu-Br-MOF) [pypz=bis[3,5-dimethyl-4-(4'-pyridyl)pyrazol-1-yl] methane] has been synthesized by using an elongated and flexible bridging ligand. The structure analysis reveals that each pypz ligand acts as a tritopic ligand connected to two Cu2Br2 dimeric units, forming a one-dimensional zig-zag chain, and these chains further connected by a Cu2Br2 unit, give a two-dimensional framework on the bc-plane. In the Cu2Br2 dimeric unit, the copper ions are four coordinated, thereby possessing a tetrahedral geometry; this proves to be an excellent heterogeneous catalyst for the aerobic homocoupling of arylboronic acids under mild reaction conditions. This method requires only 3 mol % of catalyst and it does not require any base or oxidant-compared to other conventional (Cu, Pd, Fe, and Au) catalysts-for the transformation of arylboronic acids in very good yields (98 %). The shape and size selectivity of the catalyst in the homocoupling was investigated. The use of the catalyst was further extended to the epoxidation of olefins. Moreover, the catalyst can be easily separated by simple filtration and reused efficiently up to 5 cycles without major loss of reactivity.

CN-Dimeric ortho-palladated complex catalyzed cyanation of aryl halides under microwave irradiation

The catalytic activity of dimeric [Pd{C6H2(CH 2CH2NH2)-(OMe)2,2,3}(m-Br)] 2 complex was investigated in the synthesis of benzonitriles under microwave irradiation conditions. The substituted benzonitriles were produced from various aryl halides in excellent yields and short reaction times using a catalytic amount of this complex as efficient, stable and air- and moisture-tolerant catalyst, and K4[Fe(CN)6] as a green cyanide source in DMF at 130 °C.