Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/28628
Title: Enantioselective 1,3-dipolar cycloaddition of methyleneindolinones and N,N′-cyclic azomethine imines
Authors: Hong, L
Kai, M
Wu, C
Sun, W
Zhu, G
Li, G
Yao, X
Wang, R
Issue Date: 2013
Publisher: Royal Society of Chemistry
Source: Chemical communications, 2013, v. 49, no. 60, p. 6713-6715 How to cite?
Journal: Chemical communications 
Abstract: A new chiral bis-phosphoric acid 3l bearing triple axial chirality was synthesized and applied to effect a highly enantioselective 1,3-dipolar cycloaddition reaction between N,N′-azomethine imines and methyleneindolinones for the creation of chiral spiro[pyrazolidin-3,3′- oxindoles] in excellent yields and selectivities. MS experiment and DFT calculation studies prompted us to propose a dual H-bond donor activation mode of bis-phosphoric acid which is different from the traditional phosphoric acid catalysis.
URI: http://hdl.handle.net/10397/28628
ISSN: 1359-7345
EISSN: 1364-548X
DOI: 10.1039/c3cc41507d
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