Protonation of Some 5-Substituted Di(2-thienyl) Ketones in Sulfuric Acid. A Comparison with Other 2-Thienyl and Phenyl Ketones

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Title:Protonation of Some 5-Substituted Di(2-thienyl) Ketones in Sulfuric Acid. A Comparison with Other 2-Thienyl and Phenyl Ketones
Creators:
Noto, Renato
Gruttadauria, Michelangelo
Lo Meo, Paolo
Spinelli, Domenico
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 64, 11, pp. 1893-1901
Uncontrolled Keywords:Acidity constants, Heterocyclic ketones, Thiophenes, Linear free energy relationships, Hammett equation, Substituent effects

Abstract

Protonation equilibria of some 5-substituted di(2-thienyl) ketones have been investigated spectrophotometrically in aqueous solutions of sulfuric acid at 298 K. The experimental p<i>K</i><sub>BH</sub>+ values have been analyzed by means of the Hammett equation. The calculated ρ as well as the p<i>K</i><sub>BH</sub>+ and <i>m</i>* values have been compared with those for substituted 2-acetyl- thiophenes and phenyl 2-thienyl ketones. <p>

Title:Protonation of Some 5-Substituted Di(2-thienyl) Ketones in Sulfuric Acid. A Comparison with Other 2-Thienyl and Phenyl Ketones
Creators:
Noto, Renato
Gruttadauria, Michelangelo
Lo Meo, Paolo
Spinelli, Domenico
Uncontrolled Keywords:Acidity constants, Heterocyclic ketones, Thiophenes, Linear free energy relationships, Hammett equation, Substituent effects
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:64
Number:11
Page Range:pp. 1893-1901
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19991893UNSPECIFIED
ID Code:1603
Item Type:Article
Deposited On:06 Feb 2009 17:10
Last Modified:06 Feb 2009 16:11

Citation

Noto, Renato; Gruttadauria, Michelangelo; Lo Meo, Paolo; Spinelli, Domenico (1999) Protonation of Some 5-Substituted Di(2-thienyl) Ketones in Sulfuric Acid. A Comparison with Other 2-Thienyl and Phenyl Ketones. Collection of Czechoslovak Chemical Communications, 64 (11). pp. 1893-1901. ISSN 0010-0765

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