期刊
TETRAHEDRON LETTERS
卷 53, 期 17, 页码 2157-2159出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2012.02.057
关键词
N-Acyliminium ions; alpha-Amidoalkylation; Bronsted Acids; Asymmetric catalysis
资金
- Ministerio de Ciencia e Innovacion [CTQ2009-07733]
- Universidad del Pais Vasco [UFI 11/22]
BINOL-derived chiral Bronsted acids are capable of carrying out the intramolecular alpha-amidoalkylation of a tertiary N-acyliminium ions when a methoxylated benzene ring is used as internal pi nucleophile. The reaction can be applied to the synthesis of pyrrolo[2,1-a]isoquinolines and use of the sterically congested acid 3e is determinant to obtain good levels of enantioselection. (c) 2012 Elsevier Ltd. All rights reserved.
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