ChemInform Abstract: Synthesis of Substituted 3-Aminospiro-4-but-2-enolides.
✍ Scribed by M. V. Mavrov; N. I. Simirskaya
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 28 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0931-7597
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## Abstract magnified image Under acetylating conditions __racemic__ thioflavanone thiosemicarbazones cyclize into __racemic__ 3‐acetyl‐spiro[1,3,4‐thiadiazoline‐2,4′‐thioflavans] and a __racemic__ 3‐acetylspiro[1,3,4‐oxadiazoline‐2,4′‐thioflavan] with __trans__ O(1) or S(1) and Ph(2′~eq~). Hinder
Synthesis and Properties of 2-Substituted 4-Hydroxy-4-isoxazoline-3ones. -The synthesis of hitherto not described 2-substituted 4-hydroxyisoxazolinones (IV) via intramolecular cyclization of generally unstable bromopyruvohydroxamic acids (III) is accomplished. The novel heterocycles display moderat