72948-58-4

Upstream product

• 1217-45-4 9,10-Dicyanoanthracene 
• 28493-54-1 benzyltributyltin 
• 72948-51-7 9-anthrylbenzyl chloride 
• 151-50-8 potassium cyanide 
• 72948-52-8 9-(1-hydroxybenzyl)-10-methylanthracene 
• 1539-57-7 diethyl 2,6-dimethyl-4-benzyl-1,4-dihydropyridine-3,5-dicarboxylate 
• 86170-64-1 bromo-9 benzyl-10 anthracene 
• 544-92-3 copper(I) cyanide 

Downstream Products

• 103510-93-6 9,10,10-tribenzyl-9,10-dihydro-anthracene-9-carbonitrile 
• 103166-33-2 10,10-dibenzyl-9,10-dihydro-anthracene-9-carbonitrile 

Relevant academic research and scientific papers

Quenching of Singlet Excited States of Electron-Deficient Anthracenes by Allyl- and Benzyltrialkylstannanes

Allyl- and benzyltrialkylstannanes quench the fluorescent singlet states of several meso-substituted anthracenes.Intermediacy of a charge-stabilized exciplex is supported by correlation of fluorescence quenching rate constants with anthracene reduction potential for the constant quencher benzyltrimethylstannane and with the ionization potential of the quencher stannane for the constant fluorescor 9,10-dicyanoanthracene (DCA).Quenching of DCA by a series of para-substituted (X = Cl, F, H, CH3, OCH3) benzyltri-n-butylstannanes can be analyzed by a Hammet treatment (ρ = -1.4 vs. ?r).Quantum yield measurements of DCA dissappearance as a function of both the nature of X and the quencher concentration provide rate constants for product-forming channels during exciplex decay.Limiting quantum yields for product formation are shown to increase with increasing electron-withdrawing nature of X while the rate constant for product formation is nearly invariant with X.Rate constants for radiationless return to unchanged states increase dramatically as X becomes electron releasing.A rationale for all observed data in terms of reversible exciples formation and subsequent decay is presented.

Visible-Light-Mediated Aromatic Substitution Reactions of Cyanoarenes with 4-Alkyl-1,4-dihydropyridines through Double Carbon-Carbon Bond Cleavage

Novel aromatic substitution reactions of cyanoarenes with 4-alkyl-1,4-dihydropyridines as alkylating reagents in the presence of a catalytic amount of a photoredox catalyst proceed smoothly to give the corresponding alkyl-substituted arenes in good to high yields. The present reaction system realizes a novel C-C bond-forming reaction between two fragments generated from the C-C bond-cleavage reactions of two independent substrates.