1-Arsa-3-germaallene Tip(t-Bu)Ge鈺怌鈺怉sMes*: The Heaviest Mixed Group 14 and 15 Heteroallenic Compound

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• 作者：Dumitru Ghereg ; Nathalie Saffon ; Jean Escudi茅 ; Karinne Miqueu ; Jean-Marc Sotiropoulos
• 刊名：Journal of the American Chemical Society
• 出版年：2011
• 出版时间：March 2, 2011
• 年：2011
• 卷：133
• 期：8
• 页码：2366-2369
• 全文大小：795K
• 年卷期：v.133,no.8(March 2, 2011)
• ISSN：1520-5126

文摘

The 1-arsa-3-germaallene Tip(t-Bu)Ge鈺怌鈺怉sMes* (1, Tip = 2,4,6-triisopropylphenyl, Mes* = 2,4,6-tri-tert-butylphenyl), a stable heavier group 14 and 15 congener of allenes, has been synthesized by debromofluorination of Tip(t-Bu)Ge(F)鈥擟(Br)鈺怉sMes*. It reacts with methanol and 2,3-dimethyl-1,3-butadiene by the Ge鈺怌 double bond. The allenic-type structure of 1, featuring cumulated Ge鈺怌 and C鈺怉s double bonds, has been evidenced by means of spectroscopic and single-crystal X-ray determination. The electronic properties involved in this new system were obtained from DFT calculations. The mechanism of the reaction between 1 and the dimethylbutadiene is also described to understand the observed regio- and chemoselectivity.