Tin(II) chloride-mediated synthesis of 2-substituted benzoxazoles
β Scribed by Chan Sik Cho; Dong Tak Kim; Jiao Qiang Zhang; Son-Lam Ho; Tae-Jeong Kim; Sang Chul Shim
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 2002
- Tongue
- English
- Weight
- 38 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0022-152X
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β¦ Synopsis
Abstract
2βAminophenols react with an array of carboxylic acids in dioxane at 180Β° in the presence of tin(II) chloride to afford the corresponding 2βsubstituted benzoxazoles in good yields. The reaction is applicable to a wide range of alkyl, alkenyl, aryl carboxylic acids.
π SIMILAR VOLUMES
A simple, fast and efficient benign procedure has been developed for one-pot synthesis of 2-substituted benzothiazoles in the presence of zirconium(IV) oxide chloride octahydrate (ZrOCl 2 β’8H 2 O) and anhydrous copper(II) sulfate. The reaction of 2-aminothiophenol with aldehydes and anhydrides was c