Related Experiment Video
Updated: Jun 28, 2026

Preparation of N-(2-alkoxyvinyl)sulfonamides from N-tosyl-1,2,3-triazoles and Subsequent Conversion to Substituted Phthalans and Phenethylamines
Published on: January 3, 2018
Characterization of the ionization and spectral properties of sulfonephthalein indicators. Correlation with
M C Aragoni1, M Arca, G Crisponi
1Dipartimento di Chimica e Tecnologie Inorganiche e Metallorganiche, Via Ospedale 72, 09124 Cagliari, Italy.
Abstract:
A spectrophotometric study is presented on the first ionization equilibrium of a class of substituted sulfonephthaleins, whose second ionization was the subject of the first part of this work. The present study was more difficult than the previous in that highly acid media and acidity functions had to be used. Nevertheless the results were of sufficient accuracy to allow the dual substituent analysis of Swain and Lupton (C.G. Swain and A.C. Lupton, Jr., J. Am. Chem. Soc., 90 (1968) 4328). Generally speaking, the dependences of equilibrium and spectral parameters on field and resonance parameters found in this and the previous paper were very similar.
More Related Videos
08:54Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid
Published on: January 25, 2020
11:44Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds
Published on: October 18, 2018
Related Concept Videos
Preparation and Reactions of Sulfides
Structure and Nomenclature of Thiols and Sulfides
Electrophilic Aromatic Substitution: Sulfonation of Benzene
UV–Vis Spectroscopy: Woodward–Fieser Rules
Chirality at Nitrogen, Phosphorus, and Sulfur
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
Electrophilic Aromatic Substitution: Fluorination and Iodination of Benzene