2348-55-2

Basic information

• Product Name: butan-2-yl
• Synonyms: sec-butyl radical
• CAS NO: 2348-55-2
• Molecular Formula: C₄H₉
• Molecular Weight: 57.1143
• Mol File: 2348-55-2.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: butan-2-yl(CAS DataBase Reference)
• NIST Chemistry Reference: butan-2-yl(2348-55-2)
• EPA Substance Registry System: butan-2-yl(2348-55-2)

Safety Data

• Hazardous Substances Data: 2348-55-2(Hazardous Substances Data)

Upstream product

• 78-86-4 s-butyl chloride 
• 91-20-3 naphthalene anion radical 
• 100-47-0 cyanobenzene 
• 104-85-8 p-toluonitrile anion radical 
• 2216-69-5 1-methoxynaphthalene radical anion 
• 120-12-7 anthracene radical anion 
• 129-00-0 pyrene anion radical 
• 1499-10-1 9,10-diphenylanthracene anion radical 
• 2025-56-1 ethyl radical 
• 624-64-6 trans-2-Butene 
• 4630-45-9 isobutyl radical 
• 2348-46-1 ethanol radical 
• 2669-89-8 vinyl radical 
• 12169-67-4 cyclohexa-1->5-dienyl 

Downstream Products

• 78-86-4 s-butyl chloride 
• 34014-43-2 C₇H₇O₂S 
• 2025-55-0 isopropyl radical 
• 107-01-7 butene-2 
• 2025-56-1 ethyl radical 
• 12169-67-4 cyclohexa-1->5-dienyl 
• 51314-23-9 methyl diphenylmethyl radical 
• 2348-51-8 1-phenylethyl radical 
• 624-64-6 trans-2-Butene 
• 590-18-1 (Z)-2-Butene 
• 106-98-9 1-butylene 
• 109-65-9 1-bromo-butane 
• 106-97-8 n-butane 
• 513-48-4 2-butyl iodide 

Relevant articles and documents

The reactivity of ketyl and alkyl radicals in reactions with carbonyl compounds

A parabolic model of bimolecular radical reactions was used for analysis of the hydrogen transfer reactions of ketyl radicals: >C+OH + R1COR2 → >C=O + R1R2C+OH. The parameters describing the reactivity of the reagents were calculated from the experimental data. The parameters that characterize the reactions of ketyl and alkyl radicals as hydrogen donors with olefins and with carbonyl compounds were obtained: >C+OH + R1CH=CH2 → >C=O + R1C+ HCH3; >R1CH=CH2 + R2C+HCH2R3 → R2C+HCH3 + R2CH=CHR3. These parameters were used to calculate the activation energies of these transformations. The kinetic parameters of reactions of hydrogen abstraction by free radicals and molecules (aldehydes, ketones, and quinones) from the C-H and O-H bonds were compared.

The Nucleophilicity of Superoxide towards Different Alkyl Halides Estimated from Kinetic Measurements

Values of the rate constant ksub are measured for the substitution reaction between superoxide O2 anion-radical and the alkyl halides butyl chloride, 2-butyl chloride, benzyl chloride, ethyl bromide, butyl bromide, 2-butyl bromide, neopentyl bromide, benzyl bromide, (1-bromo-2,2-dimethylpropyl)benzene and 1-iodoadamantane.These rate constants are compared with the expected rate constant kET for the electron transfer reaction between the same alkyl halides and an aromatic anion radical A anion-radical with the same standard oxidation potential as O2 anion-radical.The ksub/kET ratios show that the mechanism of the substitution reaction amy shift from SN2-like to ET-like on changes in the steric hindrance and the acceptor ability of the alkyl halide.The influence on ksub/kET of the difference in self-exchange reorganization energy λ(0) between O2 anion-radical/O2 and A anion-radical/A is discussed.