136795-67-0

Upstream product

• 24680-50-0 4-methoxy-trans-cinnamaldehyde 
• 1552-41-6 diethyl [(4-cyanophenyl)methyl]phosphonate 
• 17201-43-3 4-cyanobenzyl bromide 
• 857350-22-2 (E,E)-[4-(dimethyl-2-thienylsilyl)-1,3-butadienyl]benzonitrile 
• 696-62-8 para-iodoanisole 

Downstream Products

• 906356-99-8 4-{(1E,3E)-4-[4-(8-Hydroxy-octyloxy)-phenyl]-buta-1,3-dienyl}-benzonitrile 
• 906357-00-4 4-{(1E,3E)-4-[4-(11-Hydroxy-undecyloxy)-phenyl]-buta-1,3-dienyl}-benzonitrile 
• 906357-01-5 4-{(1E,3E)-4-[4-(12-Hydroxy-dodecyloxy)-phenyl]-buta-1,3-dienyl}-benzonitrile 

Relevant academic research and scientific papers

Effect of microheterogeneous media on the fluorescence and fluorescence probe properties of donor-acceptor diarylbutadienes

Diarylbutadienes, namely 1-(para-cyanophenyl)-4-phenylbuta-1E,3E-diene (1), 1-(para-methoxyphenyl)-4-phenylbuta-1E,3E-diene (2), 1-(para-cyanophenyl)-4-(para-methoxyphenyl)-buta-1E,3E-diene (3) have been prepared and investigated for their absorption and

Observation of a non-conventional Horner-Wadsworth-Emmons olefination product and the effect of the lateral ethyl substitution on the solid state fluorescence

Donor-acceptor-substituted diphenylbutadienes, namely 1-(p-methoxyphenyl)- 4-(p-cyanophenyl)buta-1E, 3E-diene (MCB) and 1-(p-N,N-dimethylaminophenyl)-4-(p- cyanophenyl)buta-1E,3,E-diene (ACB) exhibit fluorescence properties in their solid that are distinctly different from their fluorescence in solution. The red-shifted absorption and emission spectra observed in the solid state are attributed to the formation of J aggregates. Preparation of these derivatives via a Horner-Wadsworth-Emmons reaction, wherein the phosphonate obtained by treating p-cyanobenzyl bromide with triethyl phosphite was condensed with corresponding cinnamaldehydes, also yielded the non-conventional olefination products 1-(p-methoxyphenyl)-4-(p-cyanophenyl)-4-(ethyl)buta-1E,3E-diene (MCBE) and 1-(p-N, N-dimethylaminophenyl)-4-(p-cyanophenyl)-4-(ethyl)buta-1E,3E-diene (ACBE), which bear an ethyl group substituent on their butadiene chain. The formation of these products suggests a base-catalyzed 1,3-migration of an ethyl group from an oxygen center to the benzylic position in the initially formed phosphonate. The presence of the ethyl group in an otherwise planar molecule was observed to significantly hinder aggregation in the solid state, resulting in molecule-like fluorescence even in their bulk state.

Sequential cross-coupling of 1,4-bissilylbutadienes: Synthesis of unsymmetrical 1,4-disubstituted 1,3-butadienes

A mild and general and stereospecific cross-coupling reaction of unsymmetrical 1,4-bissilyl-1,3-butadienes has been accomplished. By the use of either a benzyldimethylsilyl or 2-thienyldimethylsilyl unit at one end of the dienylsilanol, a selective cross-