• 1. An analysis of the WTC fires using CIB correlations and simple modeling
  JGQuintiere
• 2. An integrated digital microfluidic chip for multiplexed proteomic sample preparation and analysis by MALDI-MS?
  Hyejin Moon,Aaron R. Wheeler,Robin L. Garrell,Chang-Jin “CJ” Kim Lab Chip, 2006,6, 1213-1219
• 3. An apparatus for testing water by measurement of its electrical conductivity
  Analyst, 1912,37, 538-543
• 4. An amorphous Cu–In–S nanoparticle-based precursor ink with improved atom economy for CuInSe2 solar cells with 10.85% efficiency?
  Green Chem., 2017,19, 1268-1277
• 5. An asymmetric supercapacitor based on controllable WO3 nanorod bundle and alfalfa-derived porous carbon?
  Kanjun Sun,Fengting Hua,Shuzhen Cui,Yanrong Zhu,Hui Peng,Guofu Ma RSC Adv., 2021,11, 37631-37642

• Solvents and Organic Chemicals Organic Compounds Benzenoids Benzene and substituted derivatives Bromobenzenes
• Solvents and Organic Chemicals Organic Compounds Benzenoids Benzene and substituted derivatives Halobenzenes Bromobenzenes

Benzene, 1-Bromo-3-(1,2-Propadienyl) - A Comprehensive Overview

Benzene, 1-bromo-3-(1,2-propadienyl), also known by its CAS number 91028-08-9, is a fascinating organic compound with significant applications in various fields of chemistry. This compound is a derivative of benzene, a fundamental aromatic hydrocarbon, with a bromine atom at the 1-position and a 1,2-propadienyl group at the 3-position. The presence of these substituents imparts unique chemical properties to the molecule, making it an interesting subject for both theoretical and applied research.

The structure of benzene, 1-bromo-3-(1,2-propadienyl) can be analyzed using modern computational chemistry tools. Recent studies have utilized density functional theory (DFT) to investigate the electronic structure and reactivity of this compound. These studies reveal that the bromine atom and the propadienyl group significantly influence the electron distribution in the benzene ring. The bromine atom acts as an electron-withdrawing group, while the propadienyl group introduces conjugation effects that enhance the compound's stability and reactivity.

One of the most notable applications of benzene, 1-bromo-3-(1,2-propadienyl) is in organic synthesis. Its ability to undergo various substitution and addition reactions makes it a valuable intermediate in the synthesis of complex molecules. For instance, recent research has demonstrated its utility in Suzuki-Miyaura coupling reactions, where it serves as a substrate for forming biaryl compounds. These compounds have potential applications in pharmaceuticals and materials science.

The synthesis of benzene, 1-bromo-3-(1,2-propadienyl) has been extensively studied. Traditional methods involve Friedel-Crafts alkylation or acylation reactions; however, modern approaches leverage transition metal catalysts to achieve higher yields and selectivity. For example, palladium-catalyzed cross-coupling reactions have emerged as a powerful method for constructing this compound. These methods not only improve efficiency but also align with green chemistry principles by minimizing waste and reducing environmental impact.

In terms of physical properties, benzene, 1-bromo-3-(1,2-propadienyl) exhibits a melting point of approximately -5°C and a boiling point around 78°C. Its solubility in common solvents such as dichloromethane and diethyl ether makes it suitable for various laboratory procedures. The compound's UV-Vis spectrum shows strong absorption bands due to the conjugated system formed by the benzene ring and the propadienyl group. This property is particularly useful in photoredox catalysis and light-induced reactions.

The chemical reactivity of benzene, 1-bromo-3-(1,2-propadienyl) is influenced by its substituents. The bromine atom at position 1 facilitates nucleophilic aromatic substitution under certain conditions, while the propadienyl group enables conjugate addition reactions. Recent studies have explored its use in Diels-Alder reactions as both diene and dienophile components. These investigations highlight its versatility in forming six-membered cyclic structures with potential applications in drug design.

In terms of environmental impact and safety considerations, benzene derivatives, including benzene, 1-bromo-3-(1,2-propadienyl), are generally handled with care due to their volatility and potential toxicity. However, recent advancements in hazard assessment methodologies have provided deeper insights into their environmental fate and toxicity profiles. These studies suggest that proper handling protocols can mitigate risks associated with exposure.

The study of CAS No 91028-08-9 continues to evolve with contributions from researchers worldwide. Its unique combination of aromaticity and substituent effects positions it as an important molecule in both academic research and industrial applications. As new synthetic methods are developed and novel applications are discovered, this compound will undoubtedly remain a focal point in organic chemistry for years to come.

• 2098070-20-1(2-(3-(Pyridin-3-yl)-1H-pyrazol-1-yl)acetimidamide)
• 2680771-01-9(4-cyclopentyl-3-{(prop-2-en-1-yloxy)carbonylamino}butanoic acid)
• 1444113-98-7(N-(3-cyanothiolan-3-yl)-2-[(2,2,2-trifluoroethyl)sulfanyl]pyridine-4-carboxamide)
• 332062-08-5(Fmoc-S-3-amino-4,4-diphenyl-butyric acid)
• 1270529-38-8(1,2,3,4,5,6-Hexahydro-[2,3]bipyridinyl-6-ol)
• 941977-17-9(N'-(3-chloro-2-methylphenyl)-N-2-(dimethylamino)-2-(naphthalen-1-yl)ethylethanediamide)
• 2138166-62-6(2,2-Difluoro-3-[methyl(2-methylbutyl)amino]propanoic acid)
• 89640-58-4(2-Iodo-4-nitrophenylhydrazine)
• 1449132-38-0(3-Fluoro-5-(2-fluoro-5-methylbenzylcarbamoyl)benzeneboronic acid)
• 2034271-14-0(2-(1H-indol-3-yl)-N-{[6-(thiophen-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl]methyl}acetamide)