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Phosphino-1,2,3-butatrienes from 2-Vinyl-1H-phosphirenes by Ring Cleavage with Organolithium Compounds1
08 March 2002 (online)
The 2-vinyl-1H-phosphirenes 4 and 9, easily accessible from 1-chloro-2-vinyl-1H-phosphirenes 3 by nucleophilic substitution at phosphorus, react with organolithium derivatives to furnish the title compounds 6, 8, and 10. The 1H-phosphirenes 11 behave differently and give rise to the vinylallenes 15.