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Benzothiazole compounds. XXI. The carbon:oxygen stretching frequencies and structure of 3-substituted 2-oxobenzothiazoles

A. Perjéssy and V. Sutoris

Department of Organic Chemistry, Faculty of Natural Sciences, Komenský University, CS-H42 15 Bratislava

Abstract: The C = 0 stretching frequencies in tetrachloromethane and chloroform and the structure of a series of thirty-five 3-substituted 2-oxobenzothiazoles were investigated. A good linear correlation has been found between the carbonyl stretching frequencies of 2-oxo group and Taft inductive  σ* constants of substituents in position 3. The mutual comparison of C = О stretching frequen­cies and results of the above correlation enables to determine or predict the conformation of several 3-substituted 2-oxobenzothiazoles.

Full paper in Portable Document Format: 381a119.pdf

Chemical Papers 38 (1) 119–126 (1984)