Isothiazoles. Part 9. An Efficient Synthetic Route to 5-Substituted-3-amino-4-arylisothiazole 1,1-Dioxides and Their 4,5-Dihydro Derivatives. -The thiazole dioxide (I) does not react with alcohols, while the derivative (VIII) does not undergo addition with aliphatic and aromatic amines but with the
Isothiazoles. Part IX. An efficient synthetic route to 5-substituted-3-amino-4-arylisothiazole 1,1-dioxides and their 4,5-dihydro derivatives
✍ Scribed by Egle M Beccalli; Francesca Clerici; Maria Luisa Gelmi
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- French
- Weight
- 599 KB
- Volume
- 55
- Category
- Article
- ISSN
- 0040-4020
No coin nor oath required. For personal study only.
✦ Synopsis
A simple method to introduce an heteroatom substituent at C-5 of isothiazole dioxides is reported. Through Michael addition reaction 5-substituted isothiazole and 4,5-dihydroisothiazole 1,1-dioxides were obtained allowing the preparation of a series of derivatives of special interest for biological studies.
📜 SIMILAR VOLUMES
## Abstract The condensation of 4‐hydroxy‐6‐methyl‐2__H__‐pyran‐2‐one and substituted 2‐hydroxybenzaldehydes with ammonium acetate gave the title heterocycles. Synthesis of 1,5‐dihydro‐2‐methyl‐4__H__‐[1]naphtho‐[1′,2′:5,6]pyrano[4,3‐__b__]‐pyridine‐4,5‐dione is also described. A reaction mechanism