Regioselective synthesis of novel dispiropyrrolidine and dispiropyrrolizidine oxindole derivatives via azomethine ylide specific [3+2]-cycloaddition

Structurally complex spiro analogues of indenoquinoxaline have been synthesized via the cycloaddition reaction of azomethine ylides with alkyl indeno[2,1-b]quinoxalin-11-ylidene acetate dipolarophiles in a highly regioselective and stereoselective manner. The structure and relative stereochemistry o...

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Bibliographic Details
Published in:RSC advances 2014-01, Vol.4 (5), p.2263-2266
Main Authors: Lanka, Srinu, Thennarasu, Sathiah, Perumal, Paramasivan T.
Format: Article
Language:English
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Summary:Structurally complex spiro analogues of indenoquinoxaline have been synthesized via the cycloaddition reaction of azomethine ylides with alkyl indeno[2,1-b]quinoxalin-11-ylidene acetate dipolarophiles in a highly regioselective and stereoselective manner. The structure and relative stereochemistry of the cycloadducts were confirmed using super(1)H and super(13)C-NMR spectroscopic methods, and single crystal X-ray diffraction studies.
ISSN:2046-2069
2046-2069
DOI:10.1039/C3RA44953J