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Thermal conversion of 1-alkynyl-1,2-dihydrophosphetes into phosphinines

✍ Scribed by Narcis Avarvari; Pascal Le Floch; Claude Charrier; François Mathey

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
481 KB
Volume
7
Category
Article
ISSN
1042-7163

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✦ Synopsis

l-Alkynyl-l,2-dihydrophosphetes, as prepared by reaction of the appropriate titanacyclobutenes with alkynyldichlorophosphines, rearrange to the corresponding phosphinines via an original 4n-cycloreversion-6n-electrocyclization mechanism. The reaction of dimethyltitanocene with 1,4-diphenylbutadiyne affords a new 3-vinyltitanacyclobut-3-ene that can serve

to prepare a 3-vinylphosphinine 6 by the same route.

📜 SIMILAR VOLUMES

ChemInform Abstract: Thermal Conversion
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Thermal Conversion of 1-Alkynyl-1,2-dihydrophosphetes into Phosphinines. -Phosphetes (V), which are readily prepared by reaction of the appropriate titanacyclobutenes (III) with alkynyldichlorophosphines ( IV), rearrange to the corresponding phosphinines (VI) via an original 4π-cycloreversion-6π-el

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## Experimental Section Enantiomeric excesses were determined by gas chromatography, with a 25 m, CHIRAL-DEX-bonded silica column. Electrospray M S was performed by Dr. H. E. K. Matimba and Dr. R. T. Aplin. All NMR spectra were recorded on a BrukerAMX800 spectrometer ('H: 500 MHz) with an inverse