5660-37-7

Basic information

• Product Name: 1,1':2',1'':3'',1''':2''',1''''-Quinquebenzene
• Synonyms: 1,1':2',1'':3'',1''':2''',1''''-Quinquebenzene
• CAS NO: 5660-37-7
• Molecular Formula: C₃₀H₂₂
• Molecular Weight: 382.5
• Mol File: 5660-37-7.mol
• Article Data: 3

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 1,1':2',1'':3'',1''':2''',1''''-Quinquebenzene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1':2',1'':3'',1''':2''',1''''-Quinquebenzene(5660-37-7)
• EPA Substance Registry System: 1,1':2',1'':3'',1''':2''',1''''-Quinquebenzene(5660-37-7)

Safety Data

• Hazardous Substances Data: 5660-37-7(Hazardous Substances Data)

Upstream product

• 626-44-8 1,3,5-Triiodobenzene 
• 2113-51-1 2-iodobiphenyl 
• 23533-35-9 biphenyl-2-ylmagnesium iodide 
• 62-53-3 aniline 
• 88241-88-7 5'-nitro-2,2''-diphenyl-m-terphenyl 
• 88241-89-8 5'-amino-2,2''-diphenyl-m-terphenyl 
• 24154-37-8 2,4,6-triiodoaniline 
• 626-00-6 1,3-Diiodobenzene 
• 82214-69-5 2-biphenylmagnesium bromide 
• 88241-90-1 5'-iodo-2,2''-diphenyl-m-terphenyl 
• 93875-17-3 5,6-dihydro-[1,1′:2′,1''-terphenyl]-3(4H)-one 
• 55365-18-9 biphenyl-2-yl-lithium 

Relevant articles and documents

Syntheses and Spectral Properties of Several Branched-chain Polyphenyls containing 1,3,5-Trisubstituted Ring(s)

Six polyphenyls, including four new compounds, 5',5''-di(2-biphenylyl)-2,2'''-diphenyl-m-quaterphenyl (3), 2,5',2''-triphenyl-m-terphenyl (4), 3,5-di(2-biphenylyl)-o-terphenyl (5), and 5''-(3-biphenylyl)-m-quinquephenyl (6), were synthesized by the Ullmann coupling reaction of iodo compounds.Proton magnetic resonance spectral studies indicated that the characteristic spectral features of the polyphenyls containing 1,3,5-trisubstituted ring system(s) were fully compatible with their conformational aspects deduced from stereomodels.Ultraviolet spectral data indicated that the dihedral angle of the pivot bond of the branched ring in the polyphenyls in solution is very similar to that of biphenyl.Keywords - Ullmann reaction; quinquephenyl; sexiphenyl; septiphenyl; decaphenyl; polyphenyl; IR; UV; 1H-NMR

Studies of Polyphenyls and Polyphenylenes. II. The Synthesis and Physical Properties of Polyphenyls Containing Para Linkage

Twelwe linear polyphenyls, including quinque- to octiphenyl, were synthesized by the Ullmann cross-coupling reaction of iodobiphenyl with diiodobenzene or iodoterphenyl.Ultraviolet spectral studies of the polyphenyls indicated that the positions of the K-bands above ca.260 nm, regardless of the presence of o- or m-phenylene unit(s), may be considered to be an indication of the approximate number of consecutive p-phenylene units.Infrared studies also showed that the locations of strong or medium bands in the 815-850 cm-1 region may give the same information.The HMO calculations of the longest wavelength absorption bands of twenty-four polyphenyls were carried out.A comparison between the calculated and observed wavelengths gave rather good agreement, except in the cases of two compounds.The signals of the proton magnetic resonanse spectra of eighteen polyphenyls were assigned tentatively.The correlations between the arrangement of the benzene rings and the spectral patterns are discussed.