Synthesis of 3-Bromo-4-phenylisothiazole-5-carboxylic Acid and 3-Bromoisothiazole-5-carboxylic Acid

Reactions of 3-bromo-4-phenylisothiazole-5-carboxamide and 3-bromoisothiazole-5-carboxamide with NaNO<sub>2</sub> (4 equiv.), in TFA, at <i>ca</i>. 0 °C gave the carboxylic acid products in 99% and 95% yields, respectively. The two compounds were fully characterized.

Bibliographic Details
Main Authors: Andreas S. Kalogirou, Panayiotis A. Koutentis
Format: Article
Language:English
Published: MDPI AG 2023-01-01
Series:Molbank
Subjects:
Online Access:https://www.mdpi.com/1422-8599/2023/1/M1557