Nucleophilic attack on the nitrone tautomeric form of 1-hydroxy-2-phenylindole
β Scribed by Paolo Bruni; Elisabetta Giorgini; Giampaolo Tommasi; Lucedio Greci
- Book ID
- 104208534
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- French
- Weight
- 507 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0040-4020
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π SIMILAR VOLUMES
Received in ult 9 du (prst 1972; aoospted for publiaatian 16 Augwt 1972) 'tie wish to report thet the pyrazole derivatives (1 -1) which are derived from the reaction of a-hydrazino-azaheterocycles with $-dicarbonyl co.:lpounds or acetylenic esters are true 5-hydroxypyrazoles (A -1. C), stabilized by
## Dedicated to Professor G. Smets on the occasion of his 75th birthday The title compounds have been analyzed by 13C NMR spectroscopy and compared with the N-3 methyl and O/S alkyl derivatives. The mesoionic structures 2a,b are rejected in favour of la,b on the basis of the 2Jc5 = CH coupling con