69180-08-1

Basic information

• Product Name: 9,10-Dihydro-5,8-dimethoxy-9,10-<1',2'>benzenoanthracen-1,4-diol
• CAS NO: 69180-08-1
• Molecular Weight: 346.383
• Mol File: 69180-08-1.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: 9,10-Dihydro-5,8-dimethoxy-9,10-<1',2'>benzenoanthracen-1,4-diol(CAS DataBase Reference)
• NIST Chemistry Reference: 9,10-Dihydro-5,8-dimethoxy-9,10-<1',2'>benzenoanthracen-1,4-diol(69180-08-1)
• EPA Substance Registry System: 9,10-Dihydro-5,8-dimethoxy-9,10-<1',2'>benzenoanthracen-1,4-diol(69180-08-1)

Safety Data

• Hazardous Substances Data: 69180-08-1(Hazardous Substances Data)

Upstream product

• 600736-18-3 4a,9,9a,10-Tetrahydro-5,8-dimethoxy-9,10-<1',2'>benzenoanthracen-1,4-dion 
• 13076-29-4 1,4-dimethoxyanthracene 
• 106-51-4 p-benzoquinone 
• 75829-98-0 1,4-dimethoxy-9,10-dihydro-9,10-anthracenediol 

Relevant articles and documents

ESR Spectroscopic Detection of Intramolecular Interactions in Radical Cations of Poly(α-methoxy)triptycenes

-Cycloaddition of 1,4-benzoquinone to the di- and tetra(α-methoxy)anthracenes 11 yields the diketones 12 which undergo an acid-catalyzed rearrangement to the triptycene hydroquinones 13.Methylation of 13 affords the poly(α-methoxy)triptycenes 4.Aluminium chloride in nitromethane oxidizes the triptycenes 4 to the radical cations 4+* having one 1,4-dialkoxybenzene ring (4b+*, 4c+*, 4e+*) or two (4a+*) or three (4d+*), respectively, of such potential radical centers.The protons of the radical center give rise to hyperfine splittings which are very similar to those found in the ESR spectra of simple cis-1,4-dialkoxybenzene radical cations.The other aromatic protons, but not the bridgehead protons, exhibit a long range hyperfine coupling of 0.011 mT.Selective line broadening in the ESR spectrum of the radical cation 4a+* indicates that intramolecular electron transfer between the 1,4-dimethoxybenzene moieties occurs at a moderate rate.The deceleration of the exchange rate compared to the rate expected for a free radical cation is interpreted in terms of ion pairing.