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1 article(s) from Dubovtsev, Alexey Yu.

Regiodivergent condensation of 5-alkoxycarbonyl-1H-pyrrol-2,3-diones with cyclic ketazinones en route to spirocyclic scaffolds

Alexey Yu. Dubovtsev,
Maksim V. Dmitriev,
Аndrey N. Maslivets and
Michael Rubin

Beilstein J. Org. Chem. 2017, 13, 2179–2185, doi:10.3762/bjoc.13.218

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Scheme 1: Spirocyclization of enamines with 5-methoxycarbonyl-1H-pyrrolediones.

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Scheme 2: Non-catalyzed spirocyclization of enoles (vinylogous carbonates and carbamates) with 5-methoxycarbo...

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Scheme 3: Acid-catalyzed spirocyclization of enoles (vinylogous carboxylates) with 5-alkoxycarbonyl-1H-pyrrol...

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Figure 1: ORTEP drawing of compound 12ab (CCDC 1546062) showing 50% probability amplitude displacement ellips...

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Scheme 4: Formation of mono-imines and mono-hydrazones of 1,3-cyclohexanediones and tautomeric equilibrium be...

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Scheme 5: Spirocyclizations involving non-bulky ketazinones 17 and 5-alkoxycarbonyl-1H-pyrrolediones 9.

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Figure 2: ORTEP drawing of compound 21ab (CCDC 1546063) showing 50% probability amplitude displacement ellips...

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Figure 3: ORTEP drawing of compound 22a (CCDC 1546065) showing 50% probability amplitude displacement ellipso...

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Scheme 6: Spirocyclizations involving bulky ketazinones 22 and 5-alkoxycarbonyl-1H-pyrrolediones 9.

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Figure 4: ORTEP drawing of compound 23aa (CCDC 1546064) showing 50% probability amplitude displacement ellips...

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Published 19 Oct 2017

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