Electric Literature of 23031-78-9, Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology.23031-78-9, Name is Benzo[d]isothiazol-3-amine, molecular formula is C7H6N2S. In a patent, introducing its new discovery.
The protonation equilibria of 1,2-benzisothiazoles, involving substituents at position 3, or the ring nitrogen at position 2, have been investigated by potentiometric and/or spectrophotometric methods.The values of the protonation constants (log Kobs) have been compared with values calculated according to the linear relationships of Barlin and Perrin.For compounds with substituents at position 3, the protonation constants have been determined potentiometrically.The presence of the benzisothiazole moiety induces an increase of base strength, with respect to that expected from the calculated substituent effects according to Barlin and Perrin.The protonation constants of the heterocyclic nitrogen at position 2 have been determined spectroscopically in very acidic solutions.The comparison of the values observed with those calculated following Barlin and Perrin for substituted isoquinoline shows that the ring nitrogen is less basic than expected.
The protonation equilibria of 1,2-benzisothiazoles, involving substituents at position 3, or the ring nitrogen at position 2, have been investigated by potentiometric and/or spectrophotometric methods.The values of the protonation constants (log Kobs) have been compared with values calculated according to the linear relationships of Barlin and Perrin.For compounds with substituents at position 3, the protonation constants have been determined potentiometrically.The presence of the benzisothiazole moiety induces an increase of base strength, with respect to that expected from the calculated substituent effects according to Barlin and Perrin.The protonation constants of the heterocyclic nitrogen at position 2 have been determined spectroscopically in very acidic solutions.The comparison of the values observed with those calculated following Barlin and Perrin for substituted isoquinoline shows that the ring nitrogen is less basic than expected.
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Reference£º
Thiazole | C3H7444NS – PubChem,
Thiazole | chemical compound | Britannica