α-Amidation of Cyclic Ethers Catalyzed by Simple Copper Salt and a Mild and Efficient Preparation Method for α,-Amino Alcohols

Ling He, Jing Yu, Ji Zhang, and Xiao-Qi Yu*
Department of Chemistry, Key Laboratory of Green Chemistry and Technology (Ministry of Education), Sichuan University, Chengdu, 610064, People's Republic of China, and Key Laboratory of Drug-Targeting of Education Ministry of China, West China School of Pharmacy, Sichuan University, Chengdu, 610041, People's Republic of China
Org. Lett., 2007, 9 (12), pp 2277–2280
DOI: 10.1021/ol070537i
Publication Date (Web): May 11, 2007
Copyright © 2007 American Chemical Society

 Key Laboratory of Green Chemistry and Technology.

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 Key Laboratory of Drug-Targeting of Education Ministry of China.

,
*

In papers with more than one author, the asterisk indicates the name of the author to whom inquiries about the paper should be addressed.

, xqyu@tfol.com

Abstract

Abstract Image

Copper(II) trifluoromethanesulfonate catalyzed the amidation of cyclic ethers with iminoiodanes under mild conditions (CH2Cl2, 40 °C) with good yields (up to 86% based on 97% conversion) and selectivity (only α-amino products were found). Subsequently, the tosylamidated products could undergo a reductive ring-opening reaction to give α,-amino alcohols.

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History

  • Published In Issue June 07, 2007
  • Received March 2, 2007

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