Synthesis of complex dispirocyclopentanebisoxindoles via cycloaddition reactions of 4-dimethylamino-1-alkoxycarbonylmethylpyridinium bromides with 2-oxoindolin-3-ylidene derivatives

The cycloaddition reactions of 4-dimethylamino-1-alkoxycarbonylmethylpyridinium bromides with various 2-oxoindolin-3-ylidene derivatives in ethanol in the presence of triethylamine afforded the unprecedented dispirocyclopentanebisoxindole derivatives in good yields and in high diastereoselectivity....

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Veröffentlicht in:	Tetrahedron 2014-04, Vol.70 (15), p.2537-2545
Hauptverfasser:	Lu, Li-Juan, Fu, Qin, Sun, Jing, Yan, Chao-Guo
Format:	Artikel
Sprache:	eng
Schlagworte:	1,3-Dipolar cycloaddition Bromides Cycloaddition Derivatives Dimethylaminopyridine Ethanol Ethyl alcohol Pyridinium N-ylide Spirooxindole Stereochemistry Synthesis (chemistry) Tetrahedrons
Online-Zugang:	Volltext
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