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ChemInform Abstract: Electrophilic Reactions of Activated Alkenes and Alkynes with Element Halogenides. Part 3. Reaction of Activated Alkenes with Phosphorus Trihalogenides.

โœ Scribed by M. A. KAZANKOVA; I. G. TROSTYANSKAYA; I. V. EFIMOVA; I. P. BELETSKAYA

Publisher
John Wiley and Sons
Year
2010
Weight
32 KB
Volume
28
Category
Article
ISSN
0931-7597

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โœฆ Synopsis

The base mediated reactions of alkenyl alkyl ethers (cf. (I), (III), ( V)) as well as ketene acetals (VII) with phosphorus trihalides result in the unprecedented electrophilic substitution of a vinylic hydrogen by a dihalogenophosphine group furnishing (alkoxyalkenyl) dihalogenophosphines in good yield. The reactions proceed regio-and stereospecifically. A plausible reaction mechanism involving the intermediacy of cyclic phosphiranium ions is proposed. -(KAZANKOVA, M.

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