70680-23-8

Basic information

• Product Name: 2,4''''-Dimethyl-1:1',2':1'',3'':1''',2''':1''''-quinquephenyl
• Synonyms: 2,4''''-Dimethyl-1:1',2':1'',3'':1''',2''':1''''-quinquephenyl
• CAS NO: 70680-23-8
• Molecular Weight: 410.558
• Mol File: 70680-23-8.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: 2,4''''-Dimethyl-1:1',2':1'',3'':1''',2''':1''''-quinquephenyl(CAS DataBase Reference)
• NIST Chemistry Reference: 2,4''''-Dimethyl-1:1',2':1'',3'':1''',2''':1''''-quinquephenyl(70680-23-8)
• EPA Substance Registry System: 2,4''''-Dimethyl-1:1',2':1'',3'':1''',2''':1''''-quinquephenyl(70680-23-8)

Safety Data

• Hazardous Substances Data: 70680-23-8(Hazardous Substances Data)

Upstream product

• 70680-22-7 3-(4'-Methyl-2-biphenyl)-2-cyclohexen-1-on 
• 39655-09-9 2-iodo-2’-methylbiphenyl 
• 615-37-2 ortho-methylphenyl iodide 
• 624-31-7 4-tolyl iodide 
• 552-16-9 ortho-nitrobenzoic acid 
• 5323-87-5 3-Ethoxycyclohex-2-en-1-one 
• 14385-93-4 2-iodo-4'-methylbiphenyl 

Downstream Products

• 70680-24-9 2,4''''-bis(bromomethyl)-1:1',2':1'',3'':1''',2''':1''''-quinquephenyl 

Relevant articles and documents

Helically chiral thia- and diselena-quinquephenylophanes

Helically chiral thia- and diselena-quinquephenylophanes have been synthesized starting from suitable benzene derivatives via an 8-step synthesis path.Helical thiaquinquephenylophane 9 was obtained from bis(bromomethyl)quinquephenyl 8 in cyclisation with thioacetamide under high-dilution conditions in 10percent yield.The corresponding diselenaquinquephenylophane was obtained in 17percent yield by using KSeCN and reduction.The M- and P-enantiomers of the thiaphane were separated by HPLC using the Okamoto resin.The CD and UV spectra of the pure M- and P-enantiomers of the thiaphane were recorded.X-Ray structure analyses of the racemic crystals were performed for both compounds.Unit-cell parameters: 9, a = 10.952(1), b = 11.896(2), c = 9.804(1) Angstroem, α = 104.19(1), β = 111.71(1), γ = 80.19(1) deg, V = 1146.0(3) Angstroem3; 10, a = 10.304(2), b = 15.204(4), c = 9.128(1) Angstroem, α = 105.08(2), β = 113.72(1), γ = 93.41(2) deg, V = 1242.2(5) Angstroem3.In addition, a dimeric selena-bridged quinduephenylophane was observed, and its presence confirmed by FAB-MS and 77Se NMR spectroscopy.