## Abstract The title compounds (V), which cannot be obtained by direct oxidation of (I), are prepared using the reversible formation of a dichloro‐β‐lactam moiety as novel protecting group.
Staudinger and retro-Staudinger reactions. The dichloro-β-lactam moiety as a useful handle for the synthesis of 4-aryl-2H-1,3-benzothiazine 1,1-dioxides
✍ Scribed by Lajos Fodor; Péter Csomós; Antal Csámpai; Pál Sohár
- Book ID
- 104097735
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- French
- Weight
- 187 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0040-4039
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📜 SIMILAR VOLUMES
The reaction of 3-substituted-4-hydroxyroxy-2H-1,2-be~othiazine 1,l-dioxides with aryl isocyanate under different equivalents of strong base NaH was studied. Seventeen of new derivatives were obtained whose structures were characterized by ' H NMR, IR, MS, elementary analysis and FeCls test. ## Key
## Abstract 3,4‐Dichloro‐2(5__H__)‐furanone, which has been prepared efficiently from mucochloric acid, has been transformed selectively into 4‐aryl‐3‐chloro‐2(5__H__)‐furanones either by Suzuki‐ or Stille‐type reactions. These monochloro derivatives have been used as precursors either to (__Z__)‐4