Copper mediated oxidation of amides to imides by Selectfluor
摘要:
The combination of Selectfluor and copper(I) bromide has shown a strong oxidation ability, readily oxidizing amides into the corresponding imides in acetonitrile at room temperature in less than 1 h. This transformation under mild conditions gives good to excellent chemical yields. A possible reaction mechanism is proposed. (C) 2011 Elsevier Ltd. All rights reserved.
Copper mediated oxidation of amides to imides by Selectfluor
作者:Zhuang Jin、Bo Xu、Gerald B. Hammond
DOI:10.1016/j.tetlet.2011.02.059
日期:2011.4
The combination of Selectfluor and copper(I) bromide has shown a strong oxidation ability, readily oxidizing amides into the corresponding imides in acetonitrile at room temperature in less than 1 h. This transformation under mild conditions gives good to excellent chemical yields. A possible reaction mechanism is proposed. (C) 2011 Elsevier Ltd. All rights reserved.
Replacement of BF4− by PF6− makes Selectfluor greener
作者:Zhuang Jin、Bo Xu、Stephen G. DiMagno、Gerald B. Hammond
DOI:10.1016/j.jfluchem.2012.05.010
日期:2012.11
A combination of F-TEDA-PF6 and CuBr (0.1 equiv.) provides a potent oxidant that readily oxidizes amides to provide imides at room temperature. Replacement of BF4-, the anion of Selectfluor (F-TEDA-BF4), by PF6-, dramatically reduces CuBr loading in this oxidative reaction. A possible rationale for this dramatic counterion effect is provided. (C) 2012 Elsevier B.V. All rights reserved.