ChemInform Abstract: Free-Radical Bromination of Selected Organic Compounds in Water.

From intermolecular and intramolecular competition experiments, it has been established that, by comparison with an N-methyl substituent, an N-acetyl group deactivates glycine residues in piperazine-2,5-diones towards free-radical bromination. Combined with the ease of introduction and removal of N-acetyl substituents, the deactivating effect provides a method for regiocontrolled functionalization of these compounds.

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Estimation of H2O2 Content in Free Radical Bromination and Oxidation Reactions by the H2O2-HBr System Generated Effluent Samples by Iodometry Method

Asian Journal of Chemistry ◽

10.14233/ajchem.2013.13739 ◽

2013 ◽

Vol 25 (7) ◽

pp. 4107-4108 ◽

Cited By ~ 1

Author(s):

K. Tirumala L. Vaikunta Rao ◽

Y.V. Mohan ◽

Naveen ◽

L. Vaikunta Rao

Keyword(s):

Free Radical ◽

Oxidation Reactions ◽

H2o2 Content ◽

Radical Bromination

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Stereoelectronic effects on chemoselectivity in the free radical bromination of arylcyclopropanes

Journal of the American Chemical Society ◽

10.1021/ja00170a021 ◽

1990 ◽

Vol 112 (14) ◽

pp. 5557-5562 ◽

Cited By ~ 11

Author(s):

James M. Tanko ◽

Rosemal H. Mas ◽

N. Kamrudin Suleman

Keyword(s):

Free Radical ◽

Stereoelectronic Effects ◽

Radical Bromination

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THE FREE RADICAL BRO MINA TION OF ETHYL PYRIDAZINES: THEORETICAL STUDIES

Southern Brazilian Journal of Chemistry - Southern Brazilian Journal of Chemistry, Volume 28, No. 28, 2020 ◽

10.48141/sbjchem.v22.n22.2014.56_revista2014.pdf ◽

2014 ◽

Vol 22 (22) ◽

pp. 53-60

Author(s):

I. A. ADEJORO ◽

R. O. Ogede ◽

C. U. Ibeji ◽

O. O. Adeboye

Keyword(s):

Free Radical ◽

Rapid Method ◽

Computational Methods ◽

Theoretical Studies ◽

Hartree Fock ◽

Radical Bromination ◽

Total Energies ◽

Pyridazine Derivatives ◽

Semi Empirical

Theoretical studies on free radical bromination by N-bromosuccinimide were carried out on a range of ethyl-3-methoxy-pyridazine derivatives. The investigations of these reactions performed, in order to develop a convenient and rapid theoretical means of predicting selectivity. The geometry optimizations of the total energies of the reactants and the products were calculated using Semi-empirical; AMI, MNDO, PM3 e Hartree Fock, HF3- 21 G computational methods. The calculation performed using PM3 Hamiltonian gave the best qualitative predictions, thus providing a rapid method for the selectivity of the reactions used in the synthesis of novel heterocyclic analogs of neurotransmitters.

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ChemInform Abstract: BRIDGED POLYCYCLIC COMPOUNDS PART 79, STERIC ACCELERATION IN FREE-RADICAL BROMINATION REACTIONS

Chemischer Informationsdienst ◽

10.1002/chin.197409196 ◽

1974 ◽

Vol 5 (9) ◽

pp. no-no

Author(s):

STANLEY J. CRISTOL ◽

HANS W. MUELLER

Keyword(s):

Free Radical ◽

Polycyclic Compounds ◽

Radical Bromination

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The slow combustion of aluminium trimethyl

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

10.1098/rspa.1965.0205 ◽

1965 ◽

Vol 288 (1412) ◽

pp. 123-132 ◽

Cited By ~ 4

Keyword(s):

Free Radical ◽

Organic Compounds ◽

Initial Rate ◽

Inert Gases ◽

Spontaneous Ignition ◽

Chain Mechanism ◽

Radical Chain ◽

Ambient Temperatures ◽

Slow Combustion ◽

Rate Of Reaction

Kinetic and analytical studies of the gaseous oxidation of aluminium trimethyl at ambient temperatures and at pressures well below those required for spontaneous ignition have shown that, in contrast to the oxidations of less electron-deficient metal alkyls, no peroxides can be detected and no volatile oxygenated organic compounds are formed. Methane, traces of hydrogen and a solid methoxymethyl compound of aluminium are the only products. The initial rate of reaction is approximately proportional to the first power of the alkyl pressure and to the square of the oxygen pressure; it is little influenced by temperature or by inert gases but is lowered by an increase in surface. The observed kinetic and analytical results can be accounted for in terms of a free radical chain mechanism in which termination takes place predominantly at the walls.

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