Issue 8, 2006
From the journal:

Green Chemistry

l-Proline in an ionic liquid as an efficient and reusable catalyst for direct asymmetric α-aminoxylation of aldehydes and ketones

Hai-Ming Guo,abc   Hong-Ying Niu,bc   Meng-Xia Xue,bc   Qi-Xiang Guo,bc   Lin-Feng Cun,b   Ai-Qiao Mi,b   Yao-Zhong Jiang*b  and  Jian-Ji Wang*a  

* Corresponding authors

a Department of Chemistry, Henan Normal University, Xinxiang, Henan, People's Republic of China
E-mail: guohm518@hotmail.com

b Key Laboratory for Asymmetric Synthesis and Chirotechnology of Sichuan Province and Union Laboratory of Asymmetric Synthesis, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, China

c Graduate School of Chinese Academy of Sciences, Beijing, China

Abstract

Proline-catalyzed direct asymmetric α-aminoxylation of aldehydes and ketones in the room temperture ionic liuqid 1-n-butyl-3-methylimidazolium tetrafluoroborate achieved high yields and high enantioselectivities, even when just 1–5% of proline was used as the catalyst; immobilisation of the catalyst in an ionic liquid phase offers simple product isolation and the reuse of the catalytical system at least four times in subsequent reactions.

Graphical abstract: l-Proline in an ionic liquid as an efficient and reusable catalyst for direct asymmetric α-aminoxylation of aldehydes and ketones

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Article information

DOI
https://doi.org/10.1039/B604191D
Article type
Communication
Submitted
21 Mar 2006
Accepted
19 Jun 2006
First published
27 Jun 2006

Green Chem., 2006,8, 682-684

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L-Proline in an ionic liquid as an efficient and reusable catalyst for direct asymmetric α-aminoxylation of aldehydes and ketones

H. Guo, H. Niu, M. Xue, Q. Guo, L. Cun, A. Mi, Y. Jiang and J. Wang, Green Chem., 2006, 8, 682 DOI: 10.1039/B604191D

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