24105-41-7

Basic information

• Product Name: Benzene, 1,1'-(4-methyl-1,3-cyclopentadiene-1,2-diyl)bis-
• CAS NO: 24105-41-7
• Molecular Formula: C18H16
• Molecular Weight: 232.325
• Mol File: 24105-41-7.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: Benzene, 1,1'-(4-methyl-1,3-cyclopentadiene-1,2-diyl)bis-(CAS DataBase Reference)
• NIST Chemistry Reference: Benzene, 1,1'-(4-methyl-1,3-cyclopentadiene-1,2-diyl)bis-(24105-41-7)
• EPA Substance Registry System: Benzene, 1,1'-(4-methyl-1,3-cyclopentadiene-1,2-diyl)bis-(24105-41-7)

Safety Data

• Hazardous Substances Data: 24105-41-7(Hazardous Substances Data)

Upstream product

• 24105-48-4 1.2-Diphenyl-4-methoxycarbonyl-cyclopentadien-(1.3) 
• 4970-78-9 3,4-diphenylcyclopent-2-en-1-one 
• 74-88-4 methyl iodide 
• 917-54-4 methyllithium 
• 536976-52-0 1-methyl-3,4-diphenylcyclopent-2-en-1-ol 
• 5587-78-0 4-hydroxy-3,4-diphenylcyclopent-2-en-1-one 
• 24105-45-1 (+/-)-6endo-hydroxy-1,6exo-diphenyl-2-oxa-norbornan-3-one 

Downstream Products

• 289681-30-7 bis(1,2-diphenyl-4-methylcyclopentadienyl)zirconium dichloride 
• 913058-14-7 1,2-diphenyl-4-methyl-cyclopentadienyl titanium trichloride 
• 5587-78-0 4-hydroxy-3,4-diphenylcyclopent-2-en-1-one 
• 30334-91-9 cis-1,2-Diphenyl-2-penten-1,4-dion 

Relevant articles and documents

The effect of phenyl substituents on the activity of some zirconocene photoinitiators

In this paper we report the synthesis of several unbridged zirconocenes, 1a-c, 2 and 5, each bearing a phenyl substituent in the 2-position of the cyclopentadienyl ring. We also report their photochemical behaviour and we compare the results with those obtained with the corresponding unsubstituted metallocenes 3a-c and 4. Study of their electronic spectra and EPR/spin trapping experiments showed photogeneration of ligand- and zirconium-centred radicals, thus making these complexes suitable as photoinitiators for radical polymerisation processes. The substitution of the hydrogen atom in the 2-position with a phenyl group had positive effects both on the absorption coefficients, improving the light absorption efficiency, and on the reaction yields of tert-butyl acrylate polymerisation. These results can be explained in terms of the combined effects of greater persistence of the radical in solution and/or increased efficiency of the radical in initiating the polymerisation process. Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003.