STUDIES ON PHOSPHONIUM YLIDES-XIV. THE BEHAVIOUR OF 5(4-PYRIDYL)-2-THIONO- 1,3, 4-OXADIAZOLE TOWARDS WITTIG REAGENTS
β Scribed by Boulos, L. S.; Hennawy, I. T.
- Book ID
- 120243199
- Publisher
- Taylor and Francis Group
- Year
- 1991
- Tongue
- English
- Weight
- 273 KB
- Volume
- 56
- Category
- Article
- ISSN
- 1042-6507
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## Abstract Wittig reagents (__1aβc__) react with Nβ(phenylsulfonyl)β1,4βbenzoquinone monoimine __2a__ to give adducts __3a__, __4a__, and __4b__. On the other hand, the reactions of __2b__ with the same ylides (__1aβc__) yield the new products __3b__, __6a__, and __6b__, respectively. Mechanisms a
An abnormal aza-Wittig reaction was observed when resin-bound iminophosporanes were treated with aryl isocyanates on the solid-phase. The mechanism of the reaction may involve the loss of triphenylphosphinimide instead of triphenylphosphinoxide, resulting in the formation of isocyanates instead of c