109976-12-7Relevant academic research and scientific papers
Synthesis of an Unsymmetrical Carbodiphosphorane Through Skeletal Rearrangement of a Cyclopropylidene Precursor
Schmidbaur, Hubert,Pollok, Thomas
, p. 1911 - 1912 (2007/10/02)
Depending on the reaction conditions, the methylation of 1,1-bis(diphenylphosphino)cyclopropane (1) with CH3I or FSO3CH3 yields the monophosphonium salt 2 and the bisphosphonium salt 3, respectively.Double deprotonation of the cation 3b does afford an ylide with two terminal ylide functions but the unsymmetrical carbodiphosphorane 4.The formation of 4 occurs via ucleophilic attack of a terminal ylide function at the adjacent phosphonium centre in the primary ylide intermediate.
