2-Alkylidenephosphiranes

Three stable alkylidenephosphiranes have been synthesized from the addition of the terminal phosphinidene complex Ph−P−W(CO)5 to allene, 1,1-dimethylallene, and tetramethylallene. Isopropylidenephosphirane 16b was characterized by a single-crystal X-ray structure determination. Demetalation of its W...

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Bibliographic Details
Published in:Journal of the American Chemical Society 1997-09, Vol.119 (36), p.8432-8437
Main Authors: Krill, Steffen, Wang, Bing, Hung, Jui-Te, Horan, Chris J., Gray, Gary M., Lammertsma, Koop
Format: Article
Language:English
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Summary:Three stable alkylidenephosphiranes have been synthesized from the addition of the terminal phosphinidene complex Ph−P−W(CO)5 to allene, 1,1-dimethylallene, and tetramethylallene. Isopropylidenephosphirane 16b was characterized by a single-crystal X-ray structure determination. Demetalation of its W(CO)5 group provides the uncomplexed compound. The addition reaction with tetramethylallene also yields vinylphosphirane epimers, which rearrange to phospholene 20. Ab initio MP2/6-31G* structures and energies are presented for the parent uncomplexed methylenephosphirane and its dimethyl derivatives.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja971340w