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Synthesis of substituted 3-aminospiro-4-but-2-enolides

✍ Scribed by M. V. Mavrov; N. I. Simirskaya

Book ID
105535136
Publisher
Springer US
Year
1999
Tongue
English
Weight
248 KB
Volume
35
Category
Article
ISSN
0009-3122

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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