68790-33-0

Basic information

• Product Name: trans-1-(p-Anisolyl)-2-(9-anthryl)-ethylene
• Synonyms: trans-1-(p-Anisolyl)-2-(9-anthryl)-ethylene
• CAS NO: 68790-33-0
• Molecular Weight: 310.395
• Mol File: 68790-33-0.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: trans-1-(p-Anisolyl)-2-(9-anthryl)-ethylene(CAS DataBase Reference)
• NIST Chemistry Reference: trans-1-(p-Anisolyl)-2-(9-anthryl)-ethylene(68790-33-0)
• EPA Substance Registry System: trans-1-(p-Anisolyl)-2-(9-anthryl)-ethylene(68790-33-0)

Safety Data

• Hazardous Substances Data: 68790-33-0(Hazardous Substances Data)

Upstream product

• 123-11-5 4-methoxy-benzaldehyde 
• 60949-15-7 diethyl (anthracen-9-ylmethyl)phosphonate 
• 75424-87-2 (4-Methoxy-benzyl)-triphenyl-arsonium; bromide 
• 642-31-9 9-anthracene aldehyde 
• 2417-77-8 9-bromoethylanthracene 
• 24463-19-2 anthracenylmethyl chloride 
• 2746-25-0 p-Methoxybenzyl bromide 
• 33895-18-0 anthracen-9-ylmethyltriphenylphosphonium bromide 

Relevant articles and documents

Excited-State Properties of trans-1-(9-Anthryl)-2-(4-R-phenyl)ethylenes with Electron-Donating and -Accepting Substituents (R=N(CH3)2, OCH3, CH3, Br, CN, and NO2)

The decay pathways of the lowest excited singlet state (1t*) of trans-1-(9-anthryl)-2-(4-R-phenyl)ethylenes (trans-R-StAs, where R=N(CN3)2, OCH3, CH3, Br, CN, and NO2 on the 4-position of the styryl) were studied in solution at room and low temperatures.Fluorescence lifetime (τf) and quantum yield (Φf) as well as the yield (ΦT) and spectral and kinetic properties of the lowest triplet state were determined by steady-state and transient techniques.The solvent polarity has a large effect on the Stokes shift for (H3C)2N- and O2N-StA, the two derivatives with the strongest electron-donating and -accepting substituents.The smallest changes in Φf and ΦT, in comparison with the case of parent 9-StA, are caused by the Br or CH3 groups.For O2N- and (H3C)2N-StA, and to a lesser degree for NC- and H3CO-StA, Φf and τf become significantly smaller with increasing solvent polarity.Efficient deactivation by charge transfer via an excited singlet state with essentially trans configuration (A*) is proposed for these derivatives.The 1t*->A* relaxation pathway in polar solvents is activated and competes with fluorescence and intersystem crossing.For NC-, H3CO-, and (H3C)2N-StA at room temperature trans->cis photoisomerization occurs with substantial quantum yield (Φt->c) in those solvents in which the presence of the postulated A*-state efficiency reduces fluorescence and intersystem crossing.A contribution of a triplet mechanism to trans->cis photoisomerization can be excluded throughout.A special case is O2N-StA, which exhibits virtually no photochemistry in both nonpolar and polar solvents, but Φt->c is up to 0.2 in slightly polar solvents, e.g., toluene.

Effect of Bulky Size of Carbonyl Systems on Betaine Decomposition of Semi-stablized Arsonium Ylids

Reactions of substituted benzylidentriphenylarsenanes (2a-i) with 9-anthraldehyde and 9-fluorenone have been studied using benzene-sodamide, chloroform-sodium hydride and methanol-sodium ethoxide as solvent-base pairs.In all the cases olefins (5a-i and 6a-i) are formed exclusively.Variation of solvents and bases has no effect on the course of betaine decomposition formed by the nucleophilic attack of ylids on carbonyl systems.