2-Benzyl-3-imino-1-phenylpyrazolidine (5a) and 2-allyl-3-imino-1-phen lpyrazolidine (5b) are obtained by the base-promoted rearrangement of the title compounds (4a and 4b. 7 TABLE Selected NMR Dataa 4ab (DMSO-d6) 'H: 5.01(s, m2C6H5), 7.1-7.8(m, C6H5 and NH2, exch.). 13C: 31 .01(4-C), 63.91(5-C), 168
✦ LIBER ✦
Unexpected course of rearrangement of substituted S-(1(3H)-isobenzofuranone-3-yl)isothiuronium bromides
✍ Scribed by Jiří Váňa; Miloš Sedlák; Zdeňka Padělková; Jiří Hanusek
- Book ID
- 118260169
- Publisher
- Elsevier Science
- Year
- 2012
- Tongue
- French
- Weight
- 764 KB
- Volume
- 68
- Category
- Article
- ISSN
- 0040-4020
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## Abstract Dedicated to Professor Jaromír Kaválek on the occasion of his 65^th^ birthday Substituted __S__‐(1‐phenylpyrrolidin‐2‐on‐3‐yl)isothiuronium salts in weakly basic media undergo intramolecular recyclisation reaction in which the γ‐lactam cycle is split and a thiazolidine cycle is formed.
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