16882-08-9

Basic information

• Product Name: Benzoic acid, 4,4'-(1,2-ethynediyl)bis-, dimethyl ester
• CAS NO: 16882-08-9
• Molecular Formula: C18H14O4
• Molecular Weight: 294.307
• Mol File: 16882-08-9.mol
• Article Data: 27

Chemical Properties

• CAS DataBase Reference: Benzoic acid, 4,4'-(1,2-ethynediyl)bis-, dimethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Benzoic acid, 4,4'-(1,2-ethynediyl)bis-, dimethyl ester(16882-08-9)
• EPA Substance Registry System: Benzoic acid, 4,4'-(1,2-ethynediyl)bis-, dimethyl ester(16882-08-9)

Safety Data

• Hazardous Substances Data: 16882-08-9(Hazardous Substances Data)

Upstream product

• 619-44-3 methyl 4-iodobenzoate 
• 1571-08-0 methyl 4-formylbenzoate 
• 40742-02-7 dimethyl 4,4′-(1-hydroxy-2-oxoethane-1,2-diyl)dibenzoate 
• 619-42-1 4-methoxycarbonylphenyl bromide 
• 33577-98-9 methyl 4-(3-hydroxy-3-methylbut-1-ynyl)benzoate 
• 3034-86-4 4-ethynylbenzoic acid methyl ester 
• 474661-34-2 4-(prop-1-yn-1-yl)benzoic acid methyl ester 
• 51934-41-9 4-iodobenzoic acid ethyl ester 
• 74-86-2 acetylene 
• 75-20-7 calcium carbide 
• 471-25-0 Propiolic acid 
• 75867-41-3 4-trimethylsilanylethynyl-benzoic acid methyl ester 
• 142-45-0 Acetylenedicarboxylic acid 
• 1066-54-2 trimethylsilylacetylene 

Downstream Products

• 1224340-64-0 dimethyl 4,4'-(ethane-1,2-diyl)bis(3-bromobenzoate) 
• 1224340-72-0 4,4'-(ethane-1,2-diyl)bis(3-bromobenzoic acid) 
• 1338085-84-9 C₂₄H₂₈Br₂O₄ 
• 797-21-7 1,2-bis(4-methoxycarbonylphenyl)ethane 
• 18869-29-9 (E)-4,4'-dimethylstilbene 
• 538-39-6 1,2-di-p-tolylethane 
• 88579-94-6 {4-[2-(4-hydroxymethyl-phenyl)ethyl]phenyl}methanol 
• 34541-73-6 trans-4,4'-dimethyl 4,4'-dicarboxylate-1,2-diphenylethylene 
• 3645-00-9 terephthalic acid-(2-hydroxyethyl ester)-methyl ester 

Relevant articles and documents

Solvent and substituent effects on the photochemistry of norbornadiene-diarylacetylene pauson-khand adducts

The photochemistry of Pauson-Khand cycloadducts of norbornadiene with a series of bis-aryl alkynes has been studied. Two types of photochemical transformation take place: photorearrangement to tricyclic ketones or photochemical 6π electrocyclization. High

Synthesis and Selective CO2 Capture Properties of a Series of Hexatopic Linker-Based Metal-Organic Frameworks

Four crystalline, porous metal-organic frameworks (MOFs), based on a new hexatopic linker, 1′,2′,3′,4′,5′,6′-hexakis(4-carboxyphenyl)benzene (H6CPB), were synthesized and fully characterized. Interestingly, two members of this series exhibited

Structural studies on inclusion compounds and solvent sorption behavior of gradually elongated wheel-and-axle-type diol hosts featuring lateral benzo[b]thiophene units

Based on the wheel-and-axle design strategy, a series of six new clathrate hosts featuring two di(benzo[b]thien-2-yl)hydroxymethyl units attached to both ends of a central linear building element of varying length have been synthesized and their capability to form crystalline inclusion compounds with a fixed range of organic solvents are reported. X-ray crystal structures of relevant inclusion compounds have been determined and are comparatively discussed involving structural modification of the host molecules. Organic vapor sorption behavior of the host compounds coated as solid films on the quartz crystal of a QCM device has been studied. Significant differences in the affinities towards solvent vapors dependent both on structural and polarity properties of host and solvent are observed, indicating potential application as mass sensitive materials.

Evidence of a Photoinduced Electron-Transfer Mechanism in the Fluorescence Self-quenching of 2,5-Substituted Selenophenes Prepared through in Situ Reduction of Elemental Selenium in Superbasic Media

A series of new 2,5-disubstituted selenophene derivatives are described from elemental selenium and 1,3-diynes in superbasic media. The activation of elemental selenium in a KOH/DMSO system allows cyclization with conjugated diynes at room temperature. The cyclization reaction is extended to a broad range of functional groups, for which photophysics were experimentally and theoretically investigated. The selenophene derivatives present absorption maxima in the UV-A region and fluorescence emission in the violet-to-blue region. Fluorescence decay profiles were obtained showing a monoexponential decay with fast fluorescence lifetimes (～0.118 ns), as predicted by the Strickler-Berg relations. In general, in both investigations, no dependence on the solvent polarity on the absorption and emission maxima location was observed. On the other hand, solvents and substituents are shown to play a role in the fluorescence quantum yield values. In addition, a fluorescence self-quenching behavior could be observed, related to a photoinduced electron-transfer mechanism. Theoretical calculations performed at the MP2/ADC(2)/cc-pVDZ level of theory were performed in order to investigate the photophysical features of this series of selenophene derivatives.

Robust Alkyne Metathesis Catalyzed by Air Stable d2Re(V) Alkylidyne Complexes

We report in this communication the first example of catalytic alkyne metathesis reactions mediated by well-defined non-d0 alkylidyne complexes. The air-stable d2 Re(V) alkylidyne complex Re4, bearing two PO-chelating ligands and a labile pyridine ligand, could catalyze homometathesis of internal alkynes with a broad substrate scope, including alcohols, amines, and even carboxylic acids. The catalyst can tolerate heating, air, and moisture in both solid and solution states, and the catalytic metathesis reactions could proceed normally in wet solvents.