Abstract
The first germaphosphaallene, 3, has been obtained by debromofluorination of the (fluorogermyl)bromophosphaalkene 7 and characterized by 31P NMR (240 ppm) and 13C NMR (280.9 ppm for the allenic carbon) at low temperature. Methanol and methyllithium react exclusively with the GeC double bond to afford the corresponding adducts 9 and 10. In the absence of a trapping reagent, 3 gives two types of dimer, 13a (involving two GeC bonds) and 14a (involving one GeC and one PC bond).
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