Substituent Effects on the Basicity of ortho-, meta- and para-substituted N1,N1-Dimethyl-N2-phenylformamidines in Ethanol and in Water

[img]PDF - Authorized users only
Language: English
272Kb
Title:Substituent Effects on the Basicity of ortho-, meta- and para-substituted N1,N1-Dimethyl-N2-phenylformamidines in Ethanol and in Water
Creators:
Raczyńska, Ewa Daniela
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 57, 1, pp. 113-118

Abstract

The relative δp<i>K</i><sub>a</sub> values of <i>ortho-, meta-</i>, and <i>para</i>-substituted <i>N</i><sup>1</sup>,<i>N</i><sup>1</sup>-dimethyl-<i>N</i><sup>2</sup>-phenylformamidines obtained in 95.6% aqueous ethanol have been compared with those in water. The comparison shows only some differences in the <i>ortho</i> substituent effects. The <i>meta</i> and <i>para</i> substituent effects in ethanol are not very different from those in water. Quantitative analysis of the experimental δp<i>K</i><sub>a</sub> values based on the Taft equation has led to separation of the total electromeric effects into the inductive and mesomeric effects. As compared to the amino group in anilines, the formamidine group is more sensitive to the transmission of the inductive than the mesomeric effects.

Title:Substituent Effects on the Basicity of ortho-, meta- and para-substituted N1,N1-Dimethyl-N2-phenylformamidines in Ethanol and in Water
Creators:
Raczyńska, Ewa Daniela
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:57
Number:1
Page Range:pp. 113-118
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19920113UNSPECIFIED
ID Code:16
Item Type:Article
Deposited On:06 Feb 2009 16:35
Last Modified:06 Feb 2009 15:36

Citation

Raczyńska, Ewa Daniela (1992) Substituent Effects on the Basicity of ortho-, meta- and para-substituted N1,N1-Dimethyl-N2-phenylformamidines in Ethanol and in Water. Collection of Czechoslovak Chemical Communications, 57 (1). pp. 113-118. ISSN 0010-0765

Repository Staff Only: item control page