A new route to bis-methylene analogs of triphosphate esters involving carbanion chemistry is described. Lithiated methaneselenophosphonate anion is condensed several times with chlorophosphites and phosphoramidous chlorides prior to esterification/transesterification and selenation or oxidation.
Lithium [Bis(trimethylsilyl)methylene]diphenylphosphoranide, a Building Block for the Synthesis of Bis(methylenephosphoranes)
β Scribed by Prof. Dr. Rolf Appel; Dipl.-Chem. Gerhard Haubrich
- Book ID
- 101551284
- Publisher
- John Wiley and Sons
- Year
- 1980
- Tongue
- English
- Weight
- 243 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0044-8249
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π SIMILAR VOLUMES
Themolysis of' [bis(diisopropylamino)phosphanyl](trimethylsilyl)diazomethane 1 affords the corresponding carbene 2, which is stable enough to be spectroscopically characterized. This species possesses a phosphorus-carbon multiple-bond character
The bisand tris(diazomethyl)phosphanes 5 and12 , obtained by electrophilic diasoalkane substitution of 4 or PC13 with lithiated 3 , are starting materials for complicated, heteroatom-substituted compounds. Thus, [3+2]-cycloadditions with the phosphaalkyne 9 and subsequent [1,5]-Tms shifts give rise