A New Disilene with 蟺-Accepting Groups from the Reaction of Disilyne RSi鈮iR (R = SiiPr[CH(SiMe3)2]) with Isocyanides

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• 作者：Katsuhiko Takeuchi ; Masaaki Ichinohe ; Akira Sekiguchi
• 刊名：The Journal of the American Chemical Society
• 出版年：2012
• 出版时间：February 15, 2012
• 年：2012
• 卷：134
• 期：6
• 页码：2954-2957
• 全文大小：259K
• 年卷期：v.134,no.6(February 15, 2012)
• ISSN：1520-5126

文摘

The reaction of 1,1,4,4-tetrakis[bis(trimethylsilyl)methyl]-1,4-diisopropyltetrasila-2-yne (1) with tert-butylisocyanide or tert-octylisocyanide produced the corresponding disilyne鈥搃socyanide adducts [RSiSiR(CNR鈥?₂] (R = SiⁱPr[CH(SiMe₃)₂]₂, R鈥?= ^tBu (2a) or CMe₂CH₂^tBu (2b)), which are stable below 鈭?0 掳C and were characterized by spectroscopic data and, in the case of 2a, X-ray crystallography. Upon warming to room temperature, 2 underwent thermal decomposition to produce 1,2-dicyanodisilene R(NC)Si鈺怱i(CN)R (3) and 1,2-dicyanodisilane R(NC)HSiSiH(CN)R (4) via C鈥揘 bond cleavage and elimination of an alkane and an alkene. The 1,2-dicyanodisilene derivative 3 was characterized by X-ray crystallography.