2344-52-7

Upstream product

• 740810-50-8 4-(3-hydroxy-3-methyl-1-butynyl)-1-[(triisopropylsilyl)ethynyl]benzene 
• 589-87-7 1,4-bromoiodobenzene 
• 624-38-4 para-diiodobenzene 
• 76347-62-1 4-(3-hydroxy-3,3-dimethyl-1-propynyl)-1-bromobenzene 
• 1453814-04-4 1-(((4-(4-ethynylphenyl)-2-methylbut-3-yn-2-yl)oxy)methyl)-2-nitrobenzene 
• 1453814-03-3 2-methyl-4-(4-(3-methyl-3-((2-nitrobenzyl)oxy)but-1-yn-1-yl)phenyl)but-3-yn-2-ol 
• 106-37-6 1.4-dibromobenzene 
• 1453814-02-2 1-(((4-(4-bromophenyl)-2-methylbut-3-yn-2-yl)oxy)methyl)-2-nitrobenzene 
• 115-19-5 2-methyl-but-3-yn-2-ol 
• 2344-53-8 1,4-bis(2-hydroxy-2-methyl-4-but-3-ynyl)benzene 

Downstream Products

• 184289-87-0 4-(4-{6'-[4-(3-Hydroxy-3-methyl-but-1-ynyl)-phenylethynyl]-2,2'-bis-octadecyloxy-[1,1']binaphthalenyl-6-ylethynyl}-phenyl)-2-methyl-but-3-yn-2-ol 
• 740810-61-1 2-Methyl-4-[4-((E)-3-propyl-4-{4-[(triisopropylsilanyl)-ethynyl]-phenylethynyl}-hept-3-en-1-ynyl)-phenyl]-but-3-yn-2-ol 
• 740810-62-2 2-Methyl-4-(4-{(E)-3-propyl-4-[4-((E)-3-propyl-4-{4-[(triisopropylsilanyl)-ethynyl]-phenylethynyl}-hept-3-en-1-ynyl)-phenylethynyl]-hept-3-en-1-ynyl}-phenyl)-but-3-yn-2-ol 
• 14991-99-2 2-methyl-4-[4-(3-morpholin-4-yl-prop-1-ynyl)-phenyl]-but-3-yn-2-ol 

Relevant academic research and scientific papers

Supramolecular Nanopatterns of Molecular Spoked Wheels with Orthogonal Pillars: The Observation of a Fullerene Haze

Molecular spoked wheels with intraannular functionalizable pillars are synthesized in a modular approach. The functionalities at their ends are variable, and a propargyl alcohol, a [6,6]-phenyl-C61-butyrate, and a perylene monoimide are investigated. All compounds form two-dimensional crystals on highly oriented pyrolytic graphite at the solid–liquid interface. As determined by submolecularly resolved scanning tunneling microscopy, the pillars adopt equilibrium distances of 6.0 nm. The fullerene has a residual mobility, limited by the length of the flexible connector unit. The experimental results are supported and rationalized by molecular dynamics simulations. These also show that, in contrast, the more rigidly attached perylene monoimide units remain oriented along the surface normal and maintain a smallest distance of 2 nm above the graphite substrate. The robust packing concept also holds for cocrystals with molecular hexagons that expand the pillar–pillar distances by 15 % and block unspecific intercalation.

A photolabile protection strategy for terminal alkynes

We present a strategy for photolabile protection of terminal alkynes. Several photo-caged alcohols were synthesized via mild copper(II)-catalyzed substitution between tertiary propargylic alcohols and 2-nitrobenzyl alcohol to build up robust, base stable o-nitrobenzyl (NB) photo-cleavable compounds. We compare the new photolabile protecting group with the commonly used alkyne protecting group, 2-methyl-3-butyn-2-ol and the results show that NB ethers are stable under the cleaving conditions for the cleavage of methylbutynol protected alkynes. Additionally, we present the synthesis of photo-cleavable NB derivatives containing thiol groups that can serve as agents for photoinduced surface functionalization reactions.

Synthesis of conjugated oligomers having aromatic and enediyne units alternately in the backbone that show intense fluorescence emission

(Equation Presented) Synthesis and fluorescence properties of π-conjugated compounds having alternately an aromatic ring such as benzene, pyridine, and thiophene and an enediyne unit in the backbone are described.

Synthesis of an optically active poly(aryleneethynylene) containing extended conjugation in the repeat unit

A binaphthyl-based chiral poly(aryleneethynylene) (R)-9 that contains significantly longer conjugated repeat unit than the previously reported such materials has been synthesized. GPC analysis of (R)-9 shows that its molecular weight is Mw = 38,200 and Mn