Showing papers by "Rudolph A. Abramovitch published in 1983"
TL;DR: In this article, all possible 1- and 3-monomethyl, monophenyl, dimethyl, diphenyl and methylphenyl-1H-pyrazolin-5-ones have been condensed with o-aminobenzaldehyde.
47 citations
20 citations
13 citations
TL;DR: In this article, a convenient synthesis of 1,2-benzisothiazole 1,1-dioxide from toluene-o-sulphonamide is reported.
Abstract: A convenient synthesis of 1,2-benzisothiazole 1,1-dioxide from toluene-o-sulphonamide is reported, and this allows the preparation of a number of 1,2-benzothiazepine 1,1-dioxides bearing hydrogen atoms in the seven-membered ring; 1H n.m.r. spectroscopy suggests that the later is not aromatic.
7 citations
TL;DR: Toluol-o-sulfonamid (I) ergibt durch Oxidation in Acetanhydrid das Benzisothiazol-dioxid (II), das in konz. Schwefelsaure zur Verbindung (III) gespalten wird.
Abstract: Toluol-o-sulfonamid (I) ergibt durch Oxidation in Acetanhydrid das Benzisothiazol-dioxid (II), das in konz. Schwefelsaure zur Verbindung (III) gespalten wird.