REGIO- AND STEREOSELECTIVE 1,3-DIPOLAR CYCLOADDITION OF INDENOQUINOXALINONE AZOMETHINE YLIDES TO β-NITROSTYRENES: SYNTHESIS OF SPIRO[INDENO[1,2-<i>b</i>]QUINOXALINE-11,3'-PYRROLIZIDINES] AND SPIRO[INDENO[1,2-<i>b</i>]QUINOXALINE-11,2'-PYRROLIDINES]
DOI:
https://doi.org/10.1007/3739Keywords:
nitrostyrenes, spiropyrrolidines, spiropyrrolizidines, stabilized azomethine ylides, 1, 3-dipolar cycloadditionAbstract
Azomethine ylides obtained in situ from proline or sarcosine and indenoquinoxalinones reacted with nitrostyrenes upon heating in iso-propanol for 4–5 days, resulting in the formation of spiro[indeno[1,2-b]quinoxaline-11,3'-pyrrolizidines] and spiro[indeno[1,2-b]quinoxaline-11,2'-pyrrolidines] with various regiochemistry.
Authors: Aleksey Yu. Barkov, Nikolay S. Zimnitskiy, Vladislav Yu. Korotaev, Igor B. Kutyashev, Vladimir S. Moshkin, Vyacheslav Ya. Sosnovskikh
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Published
2017-05-02
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Original Papers