105405-52-5

Basic information

• Product Name: 3-Butyn-2-ol, 4,4',4''-(1,3,5-benzenetriyl)tris[2-methyl-
• CAS NO: 105405-52-5
• Molecular Formula: C21H24O3
• Molecular Weight: 324.42
• Mol File: 105405-52-5.mol

Chemical Properties

• CAS DataBase Reference: 3-Butyn-2-ol, 4,4',4''-(1,3,5-benzenetriyl)tris[2-methyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 3-Butyn-2-ol, 4,4',4''-(1,3,5-benzenetriyl)tris[2-methyl-(105405-52-5)
• EPA Substance Registry System: 3-Butyn-2-ol, 4,4',4''-(1,3,5-benzenetriyl)tris[2-methyl-(105405-52-5)

Safety Data

• Hazardous Substances Data: 105405-52-5(Hazardous Substances Data)

Upstream product

• 626-44-8 1,3,5-Triiodobenzene 
• 115-19-5 2-methyl-but-3-yn-2-ol 
• 626-39-1 1,3,5-trisbromobenzene 

Downstream Products

• 1428643-51-9 1,3,5-tris((5-((trimethylsilyl)ethynyl)thiophen-2-yl)-ethynyl)benzene 
• 211739-82-1 1,3,5-tris[(4'-ethynylphenyl)ethynyl]benzene 
• 220870-30-4 1,3,5-tris[4-{{(trimethylsilyl)ethynyl}phenyl}ethynyl]benzene 
• 1442466-99-0 C₃₈H₂₆Si 
• 1431230-88-4 3,3',3''-(1,3,5-phenylene)tripropiolic acid 
• 168289-78-9 1,3,5-tris(4-pyridylethynyl)benzene 
• 7567-63-7 1,3,5-Triethynylbenzene 

Relevant articles and documents

Convenient preparation of di- and tri-ethynylbenzenes by cleavage of 2-hydroxy-2-methylbut-3-yn-4-yl-benzenes with water miscible reagents

2-Hydroxy-2-methylbut-3-yn-4-yl-benzenes, readily available from bromobenzenes, are efficiently cleaved by the water-miscible reagents sodium 2-propoxide in 2-propanol, or potassium hydroxide in dioxan, which facilitatese isolation of volatile ethynylbenzenes.

Conjugated poly(aryleneethynylenesiloles) and their application in detecting explosives

Hyperbranched and linear conjugated polysiloles incorporating arylene ethynylene subunits (6 and 7) were synthesized by the Sonogashira reaction. The two polymers possess unusual phenomena of PL, with gradual addition of water in their THF solution, the intensity of PL firstly increased and then decreased, this may be due to the aggregate-enhanced emission (AEE) effect and aggregation-caused quenching (ACQ) effect. The polymers function as sensitive fluorescent chemosensors for the detection of explosives, such as picric acid (PA) and TNT. The quenching constants of 6 for PA and TNT were 4.7 × 10-2 ppm-1 and 4.6 × 10-3 ppm -1, respectively. The quenching constants of 7 for PA and TNT were 8.6 × 10-2 ppm-1 and 6.5 × 10-3 ppm-1 respectively. The polymer 7 has more detective efficiency for PA and TNT than that of polymer 6, this may be due to the less steric hindrance.

Direct Enzymatic Branch-End Extension of Glycocluster-Presented Glycans: An Effective Strategy for Programming Glycan Bioactivity

The sequence of a glycan and its topology of presentation team up to determine the specificity and selectivity of recognition by saccharide receptors (lectins). Structure–activity analysis would be furthered if the glycan part of a glycocluster could be efficiently elaborated in situ while keeping all other parameters constant. By using a bacterial α2,6-sialyltransferase and a small library of bi- to tetravalent glycoclusters, we illustrate the complete conversion of scaffold-presented lactoside units into two different sialylated ligands based on N-acetyl/glycolyl-neuraminic acid incorporation. We assess the ensuing effect on their bioactivity for a plant toxin, and present an analysis of the noncovalent substrate binding contacts that the added sialic acid moiety makes to the lectin. Enzymatic diversification of a scaffold-presented glycan can thus be brought to completion in situ, offering a versatile perspective for rational glycocluster engineering.

Electrochemically active porous organic polymers based on corannulene

For the first time, porous organic polymers (POPs) based on the smallest buckybowl, corannulene (BB-POPs) have been synthesized. Three POPs were synthesised via Sonogashira co-polymerization of 1,2,5,6-tetrabromocorannulene and alkyne linkers. BB-POP-3 exhibits the highest surface area (SABET = 560 m2 g-1) and CO2 adsorption of 11.7 wt%, while they retain the redox properties of corannulene.

Novel planar and star-shaped molecules: Synthesis, electrochemical and photophysical properties

Three novel planar and star-shaped molecules containing thiophene-functionalized group and acetylenic spacers, 4-((5″-iodo-[2, 2′:5′,2″-terthiophen]-5-yl)ethynyl)aniline (I3TEA), 4,4′-([2,2′:5′,2″-terthiophene]-5,5″- diylbis(ethyne-2,1-diyl))dianiline (3T

Synthesis, spectroscopic characterization and structural investigation of a new symmetrically trisubstituted benzene derivative: 3,3′, 3′′-(Benzene-1,3,5-triyl)tripropiolic acid

The new 1,3,5-trisubstituted benzene derivative 1 featuring three propiolic acid side arms symmetrically attached to a benzene core has been synthesized. Spectroscopic studies including 1H and 13C NMR as well as FTIR measurements wer

Synthesis of conjugated aryleneethynylenesiloles dendron

Three routes were designed to synthesize a π-conjugated aryleneethynylenesiloles dendron. With the desilylation of the disilole mono(silylethynyl) derivative in the presence of potassium carbonate (K 2CO3), the silole-containing oligomer has been successfully synthesized without impact on the Si-(CH3)2 group. The disilole mono(silylethynyl) derivative was prepared by means of the Sonogashira heterocoupling reaction between the diacetylene compound and asymmetrical silole, catalyzed by the dichloro bis(triphenylphosphine)palladium, in a divergent synthesis. Due to their steric effect and triethynylbenzene self-coupling Glaser reaction, the endeavour to prepare the dendron by controlling the molar ratio of asymmetrical silole and 1,3,5-triethynylbenzene was failed. The another attempt to prepare the dendron by different desilylation condition of triisopropylsilyl group and trimethylsilyl group was also failed, the desilylation of Si-(CH3)2 group in silacyclopentadiene unit was also easily accomplished in the presence of tetrabutylammonium fluoride(Bu4NF), whereas no reaction occurred when K 2CO3 was used instead of Bu4NF. Copyright

A rapid and efficient synthetic route to terminal arylacetylenes by tetrabutylammonium hydroxide- and methanol-catalyzed cleavage of 4-aryl-2-methyl-3-butyn-2-ols

Tetrabutylammonium hydroxide with methanol as an additive was found to be a highly active catalyst for the cleavage of 4-aryl-2-methyl-3-butyn-2-ols. The reaction was performed at 55-75 °C and gave terminal arylacetylenes in good to excellent yields within several minutes. Compared with the usual reaction conditions (normally >110 °C, several hours), this novel catalyst system can dramatically decrease the reaction time under much milder conditions.

Design, synthesis, and self-assembly behavior of C3-symmetry discotic molecules via click chemistry

We prepared a series of C3-symmetry discogens with three 1,2,3-triazoles and a central benzene ring by a copper-catalyzed "click reaction" between 1,3,5-triethynylbenzene and 3,4,5-trialkoxybenzyl azides. According to the differential scanning

Synthesis of nanostructures based on 1,4- and 1,3,5-phenylethynyl units with π-extended conjugation. Carbon networks dendrimer base units

A convenient and efficient synthesis of 3,5-di(silylethynyl)phenylacetylene and p-[3,5-di(silylethynyl)phenylethynyl]phenylacetylene has been carried out. These compounds serve to prepare nanometer-sized conjugated 1,4- and 1,3,5-phenylethynyl oligomers,