Phosphino-stabilized allyl anions and trimethylenemethane dianions
✍ Scribed by J. A. van Doom; H. van der Heijden
- Book ID
- 104589177
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 179 KB
- Volume
- 109
- Category
- Article
- ISSN
- 0165-0513
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✦ Synopsis
Abstract
Phosphino‐stabilized allyl anions are formed by deprotonation of phosphinopropenes with alkyllithium. A double deprotonation of 2‐diphenylphosphinomethyl‐3‐diphenylphosphinopropene leads to interesting phosphino‐stabilized trimethylenemethane dianions. Alkylation with methyl iodide occurs at a carbon atom and not at a phosphorus centre.
📜 SIMILAR VOLUMES
The orbital energy second derivatives with respect to the CC asymmetric stretching mode of benzene, allyl cation and allyl anion show unambigiously that the ~r orbitals are unstable with respect to a distorted geometry with alternating CC bonds. It is the cr frame which enforces the D6h form of benz