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Synlett 2017; 28(16): 2051-2056
DOI: 10.1055/s-0036-1588514
DOI: 10.1055/s-0036-1588514
synpacts
Iridium-Catalyzed Asymmetric Umpolung Allylation of N-Fluorenyl Imines to Prepare 1,4-Disubstituted Homoallylic Amines
Financial support of this work comes from the Youth 1000 Talent Plan Program, the National Natural Science Foundation of China (Nos. 21602145, 81573290, U1603123), and West China Hospital, SCU (start-up funding).Further Information
Publication History
Received: 12 June 2017
Accepted after revision: 27 June 2017
Publication Date:
08 August 2017 (online)
Abstract
The discovery and development of an Ir-catalyzed asymmetric umpolung allylation of imines is discussed here. This method produces 1,4-disubstituted homoallylic amines, a class of compounds that are difficult to access by conventional methods. This reaction proceeds through a sequence involving an allylation and a 2-aza-Cope rearrangement event. The unique mechanistic feature of this reaction could be the reason for its broad substrate scope. The products of this reaction are useful intermediates for various bioactive and natural products. Besides its immediate synthetic utility, we expect this transformation to inspire the development of other umpolung functionalizations of imines and Ir-catalyzed asymmetric allylic substitution (AAS) reactions.
1 Introduction
2 Reaction Discovery
3 Substrate Scope
4 Conclusion
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