Conversion of an Acetylide−Silylene Complex to an Alkenylcarbyne Complex by Consecutive Ketone Addition and Base-Induced Silanone Elimination

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• 作者：Hiroyuki Sakaba ; Mako Yabe-Yoshida ; Hiroyuki Oike ; Chizuko Kabuto
• 刊名：Organometallics
• 出版年：2010
• 出版时间：September 27, 2010
• 年：2010
• 卷：29
• 期：18
• 页码：4115-4119
• 全文大小：810K
• 年卷期：v.29,no.18(September 27, 2010)
• ISSN：1520-6041

文摘

A new acetylide−silylene complex, Cp*(CO)₂W(SiPh₂)(CCSiMe₃) (4), was synthesized by the reaction of Cp*(CO)₂W(NCMe)Me with Ph₂HSiC≡CSiMe₃. Complex 4 reacted with acetone to give the six-membered cyclic vinylidene complex Cp*(CO)₂W═C═C(SiMe₃)CMe₂OSiPh₂ (5) by acetone insertion into the acetylide−silylene framework. Treatment of 5 with 4-(dimethylamino)pyridine resulted in the formation of the alkenylcarbyne complex Cp*(CO)₂W≡CC(═CMe₂)SiMe₃ (8) and cyclic diphenylsiloxanes.