136612-96-9

Basic information

• Product Name: 1,1':2',1''-Terphenyl, 4,4''-dimethoxy-4'-(4-methoxyphenyl)-
• CAS NO: 136612-96-9
• Molecular Formula: C27H24O3
• Molecular Weight: 396.486
• Mol File: 136612-96-9.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: 1,1':2',1''-Terphenyl, 4,4''-dimethoxy-4'-(4-methoxyphenyl)-(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1':2',1''-Terphenyl, 4,4''-dimethoxy-4'-(4-methoxyphenyl)-(136612-96-9)
• EPA Substance Registry System: 1,1':2',1''-Terphenyl, 4,4''-dimethoxy-4'-(4-methoxyphenyl)-(136612-96-9)

Safety Data

• Hazardous Substances Data: 136612-96-9(Hazardous Substances Data)

Upstream product

• 768-60-5 4-methoxyphenylacetylen 

Downstream Products

• 1433220-15-5 of 2,11-dimethoxy-6-(4-methoxyphenyl)triphenylene 

Relevant articles and documents

Cyclotrimerization of alkynes vs. ketone formation in aqueous microemulsion

In the course of our attempts to develop sustainable conditions for the catalytic organic reactions by replacement of the traditional but environmentally disfavored organic solvents by water, we studied the cyclotrimerizations of alkynes, in aqueous microemulsions. The catalyst for these reactions was the rhodium-trichloride encaged within silica sol-gel. In acidic aqueous media, alkynes can undergo addition of water to form their corresponding ketones. In order to eliminate completely the formation of ketones, relatively low reaction temperatures are required. At higher reaction temperatures, however, buffered microemulsion media is preferable. Cyclotrimerization of alkynes proved to be dependent on the reaction temperatures, the electronic nature of the substrates, the electronic nature of the surfactant and on the hydrophobicity of the sol-gel support. During the cyclotrimerization reaction, the rhodium complex was turned to Rh(0) nanoparticles characterized by TEM measurements. These investigations may be regarded as model studies for the conversion of alkynes into substituted benzenes in water.

Palladium-catalyzed acylation and/or homo-coupling of aryl- and alkyl-acetylenes

Allyl or benzyl halides, through a Pd(0)-catalyzed reaction and under CO pressure, generate acyl-palladium/halides that, in the presence of a base and an aryl- and alkyl-acetylene, undergo nucleophilic acyl substitution giving conjugated acetylenic ketones. Diynes, resulting from alkyne/alkyne homo-coupling, were instead the main products in reactions performed without allyl or benzyl halides. Moreover, dimerization, trimerization, and cyclotrimerization reactions of acetylenes were observed in reaction carried out even without base.