1088710-75-1Relevant academic research and scientific papers
Formation of vinylidenes from internal alkynes at a cyclotriphosphato ruthenium complex
Ikeda, Yousuke,Yamaguchi, Takafumi,Kanao, Keiichiro,Kimura, Kazuhiro,Kamimura, Sou,Mutoh, Yuichiro,Tanabe, Yoshiaki,Ishii, Youichi
, p. 16856 - 16857 (2008)
A ruthenium cyclotriphosphato (P3O93-) complex with a labile MeOH ligand can affect the vinylidene rearrangement of general internal alkynes via the 1,2-migration of alkyl, aryl, and acyl groups. This provides the first internal alkyne-to-vinylidene isomerization with high generality. Several intermediary η2-alkyne complexes could be isolated and were successfully transformed into the corresponding vinylidene complexes. The reaction mechanism is also discussed on the basis of a kinetic study and migratory aptitude of alkyl, aryl, and acyl groups; the present reaction proceeds via an intramolecular process and is viewed as an uncommon electrophilic rearrangement. Copyright
