16507-32-7

Basic information

• Product Name: 3,4-Dibromobutyric acid
• Synonyms: 3,4-Dibromobutyric acid
• CAS NO: 16507-32-7
• Molecular Formula: C₄H₆Br₂O₂
• Molecular Weight: 245.8972
• Mol File: 16507-32-7.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 302.7°Cat760mmHg
• Flash Point: 136.9°C
• Appearance: /
• Density: 2.121g/cm³
• Vapor Pressure: 0.000226mmHg at 25°C
• Refractive Index: 1.561
• CAS DataBase Reference: 3,4-Dibromobutyric acid(CAS DataBase Reference)
• NIST Chemistry Reference: 3,4-Dibromobutyric acid(16507-32-7)
• EPA Substance Registry System: 3,4-Dibromobutyric acid(16507-32-7)

Safety Data

• Hazardous Substances Data: 16507-32-7(Hazardous Substances Data)

Usage

General Description

3,4-Dibromobutyric acid is a chemical compound with the molecular formula C4H6Br2O2. It is a derivative of butyric acid, with two bromine atoms attached to the carbon atoms in the 3 and 4 positions. 3,4-Dibromobutyric acid is often used in organic synthesis and as a building block in the production of other chemicals. It is primarily used in the manufacturing of pharmaceuticals, agrochemicals, and specialty chemicals. 3,4-Dibromobutyric acid is a clear, colorless liquid that is soluble in water and has a strong, pungent odor. It is considered to be a hazardous substance and should be handled with proper safety precautions.

InChI:InChI=1/C4H6Br2O2/c5-2-3(6)1-4(7)8/h3H,1-2H2,(H,7,8)

Upstream product

• 625-38-7 but-3-enoic acid 
• 75-15-0 carbon disulfide 
• 7726-95-6 bromine 
• 10035-10-6 hydrogen bromide 
• 497-23-4 2-buten-4-olide 
• 25109-74-4 3,4-dibromobutyronitrile 

Downstream Products

• 75933-70-9 4-phenoxy-trans-crotonic acid 
• 625-38-7 but-3-enoic acid 
• 5469-16-9 4-Hydroxy-dihydro-furan-2-on 

Relevant articles and documents

Total synthesis of cytotoxic metabolite (±)-desmethyldiaportinol from Ampelomyces sp.

A concise total synthesis of (±)-desmethyldiaportinol isolated from Ampelomyces sp. is described. Microwave-assisted cyclocondensation of 3,5-dimethoxyhomopthalic acid with 3,4-dibromobutanoyl chloride afforded the 3-(2,3-dibromopropyl)-6, 8-dimethoxyisocoumarin in 2-3 min as the pivotal step. The 3,4-dibromobutanoyl chloride was itself synthesised from 3-butenoic acid via bromination in carbon tetrachloride at room temperature to yield 3,4-dibromobutanoic acid followed by reaction with thionyl chloride. The replacement of bromo-by hydroxyl substituent was achieved under mild conditions involving the refluxing in a mixture of acetone and water to provide (±)-3-(2,3-dihydroxypropyl)-6,8-dimethoxyisocoumarin which on complete demethylation furnished the title natural product.

Solvent-free phase-vanishing reactions with PTFE (Teflon) as a phase screen

In a solvent-free phase-vanishing reaction with PTFE (polytetrafluoroethylene, Teflon) tape as the phase screen, a thermometer adapter is utilized to insert a PTFE-sealed tube into the vapor phase above the substrate. Besides avoiding use of solvents, the experimental design is not dependent upon the densities of the reactants and the procedure generates little or no waste while providing the reaction products in high yield and in high purity.

Tissue Distribution Properties of Technetium-99m-Diamide-Dimercaptide Complexes and Potential Use as Renal Radiopharmaceuticals

A series of new ligands and the corresponding technetium-99m chelates based on diamide dimercaptide donor groups were synthesized as derivatives of technetium-99m 1,2-bis(2-thioacetamido)ethane, a complex shown to be excreted by renal tubular secretion. Chelation with 99mTc resulted in single radiochemical products or the expected numbers of stereoisomers. They were purified by high-performance liquid chromatography (HPLC) and evaluated in mice as potential renal tubular function agents. The in vivo properties were sensitive to the presence of functional groups, the positional isomerism of the carboxylate group functionality, and the chelate ring stereochemistry of the ligand. The presence of methyl groups slowed renal transit and decreased renal specificity. Cyclohexyl rings fused to the ethylene bridge of the center chelate ring decreased renal excretion while aromatic rings essentially abolished renal excretion. Slow hepatobiliary clearance was observed as an alternate mode of excretion. Polar groups, such as hydroxyl, carboxylate, and carboxamide, increased renal excretion rates and specificity in a stereochemically dependent manner. 99mTc chelates of 1,3-bis(2-thioacetamido)-2-hydroxypropane, 3,4-bis(2-thioacetamido)butanoate and 1,8-dimercapto-2,7-dioxo-3,6-diazanonanoate were identified as promising new renal radiopharmaceuticals.