Tuning the Reactivity of TEMPO by Coordination to a Lewis Acid: Isolation and Reactivity of MCl3(畏1-TEMPO) (M = Fe, Al)

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• 作者：Jeremiah J. Scepaniak ; Ashley M. Wright ; Richard A. Lewis ; Guang Wu ; Trevor W. Hayton
• 刊名：The Journal of the American Chemical Society
• 出版年：2012
• 出版时间：November 28, 2012
• 年：2012
• 卷：134
• 期：47
• 页码：19350-19353
• 全文大小：245K
• 年卷期：v.134,no.47(November 28, 2012)
• ISSN：1520-5126

文摘

Addition of 2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO) to MCl₃ (M = Fe, Al) results in the formation of MCl₃(畏¹-TEMPO) [M = Fe (1), Al (2)]. Both 1 and 2 oxidize alcohols to generate ketones or aldehydes along with the reduced complexes MCl₃(畏¹-TEMPOH) [M = Fe (3), Al (4)]. Complexes 1鈥?b>4 were fully characterized, including analysis by X-ray crystallography. Additionally, control experiments indicated that neither MCl₃ (M = Al, Fe) nor TEMPO are capable of effecting the oxidation of alcohols independently.