609355-55-7

Upstream product

• 120517-37-5 4-(3-hydroxy-3-methyl-1-butynyl)-1-iodobenzene 
• 599187-57-2 1-[(3,5-bis-trimethylsilylethynylphenyl)ethynyl]-4-ethynylbenzene 
• 599187-56-1 1-[(3,5-bis-trimethylsilylethynylphenyl)ethynyl]-4-(3-hydroxy-3-methyl-1-butynyl)benzene 
• 599187-51-6 3,5-bis(trimethylsilylethynyl)-1-(3-hydroxy-3-methyl-1-butynyl)benzene 
• 599187-53-8 3,5-bis(trimethylsilylethynyl)-1-ethynylbenzene 
• 313691-72-4 4-(3',5'-dibromophenyl)-2-methyl-3-butyn-2-ol 
• 626-39-1 1,3,5-trisbromobenzene 
• 625088-67-7 4-{4-[4-(3,5-bis-trimethylsilanylethynyl-phenylethynyl)-phenylethynyl]-phenyl}-2-methyl-but-3-yn-2-ol 

Relevant academic research and scientific papers

Synthesis of carbon dendron nano-chains with π-extended conjugation based on linear 1,4-phenylethynyl and 1,5-naphthylethynyl subunits

A convenient and efficient synthesis of 3,5-di(trimethylsilylethynyl)phenylacetylene and p-[3,5-di(trimethylsilylethynyl)-1-phenylethynyl]phenylacetylene and the naphthylethynyl homologues terminal acetylenes of 5-(N,N-dimethylamino)naphthylethyne have been carried out. These terminal acetylene compounds serve to prepare nanometer-sized conjugated 1,3,5-tri(ethynylphenyl)benzene and 1,3,5-tri(ethynylnaphthyl)benzene oligomers, by means of heterocoupling with 1,3,5-triiodobenzene, catalysed by palladium, in excellent yields. Both the ethynylphenyl or ethynylnaphthyl homologues chains show fluorescence emission radiation, with important quantum yield.

Synthesis of nanostructures based on 1,4- and 1,3,5-ethynylphenyl subunits with π-extended conjugation. Carbon dendron units

Nanometer-sized conjugated 1,4- and 1,3,5-ethynylphenyl oligomers were synthesized starting from 3,5-di(trimethylsilylethynyl)phenylacetylene and p-[3,5-di(trimethylsilylethynyl)-1-ethynylphenyl]-phenyl acetylene by cross-coupling reaction with a convenient haloaryl derivative, catalyzed by palladium(II)/copper(I), in excellent yield. The terminal acetylenes were efficiently prepared by a specific protection-deprotection methodology. All ethynylphenyl homologues obtained show fluorescence emission, with the bathochromic shift of approximately 20 nm by each ethynylphenyl unit increasing the conjugate chain. Parallel conjugated ethynylphenyl chains were prepared through the insertion of a 1,5-naphthalene subunit, and the compounds exhibit fluorescence radiation emission.