Relative rates of bromination and chlorination of 4-substituted cyclopentenes in methanol, ethanol and acetic acid

Autor:	Jian Qiu, Zhen‐Heng Gao, Ben‐Li Zhang
Rok vydání:	1989
Předmět:	Steric effects Acetic acid chemistry.chemical_compound Ethanol chemistry Organic Chemistry Inorganic chemistry Halogenation Methanol Physical and Theoretical Chemistry
Zdroj:	Journal of Physical Organic Chemistry. 2:26-34
ISSN:	1099-1395 0894-3230
DOI:	10.1002/poc.610020104
Popis:	A set of 4-monosubstituted cyclopentenes, , were synthesized and their relative rates (kX/kH) for bromination and chlorination were determined in methanol, ethanol and acetic acid at 25 °C by competitive method. log(kX/kH) for most of the substituents can be correlated by means of Taft's equation, log(kX/kH) = ρI σI + C. In methanol ρ = −2·91, ρ = −0·49, in ethanol ρ = −3·07, ρ = −0·70 and in acetic acid ρ = −1·64, ρ = −0·65. The presence of C(
Databáze:	OpenAIRE
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