4.4 Article

Acid-catalyzed C-O coupling of styrenes with N-hydroxyphthalimide: trapping alkenyl radicals by TEMPO

Journal

TETRAHEDRON
Volume 72, Issue 22, Pages 3068-3072

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2016.04.028

Keywords

Acid-catalyzed; C-O coupling; N-hydroxyphthalimide; TEMPO; 1,2-Dihydroxylaminations

Funding

  1. National Natural Science Foundation of China [NSF 21402066]
  2. Natural Science Foundation of Jiangsu Province [BK20140139]
  3. Fundamental Research Funds for the Central Universities [JUSRP11419]
  4. MOESAFEA [B13025]

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A mild metal-free acid-catalyzed 1,2-dihydroxylaminations of alkenes with N-hydroxyphthalimide and 2,2,6,6-tetramethylpiperidine N-oxyl (TEMPO) has been demonstrated under air conditions to furnish the dioxygenated products in good to excellent yields. The dioxygenated product can be easily transformed into ketone derivative using 3-chloroperbenzoic acid (m-CPBA) as the oxidant in a high yield. (C) 2016 Elsevier Ltd. All rights reserved.

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