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1 article(s) from Kasatkina, Svetlana O

Synthesis of pyrimido[1,6-a]quinoxalines via intermolecular trapping of thermally generated acyl(quinoxalin-2-yl)ketenes by Schiff bases

Svetlana O. Kasatkina,
Ekaterina E. Stepanova,
Maksim V. Dmitriev,
Ivan G. Mokrushin and
Andrey N. Maslivets

Beilstein J. Org. Chem. 2018, 14, 1734–1742, doi:10.3762/bjoc.14.147

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Figure 1: Quinoxaline-based 6/6/6-angularly fused scaffolds and respective examples of biologically active co...

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Figure 2: Synthetic routes towards the pyrimido[1,6-a]quinoxaline scaffold.

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Figure 3: Acyl(quinoxalin-2-yl)ketene.

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Scheme 1: Thermolysis of five-membered 2,3-dioxoheterocycles resulting in acyl(quinoxalin-2-yl)ketenes.

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Figure 4: STA plot of thermolysis of PQT 1a. Blue solid curve: DSC; green solid curve: TG; greed dashed curve...

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Scheme 2: Side-reactions concurring with intermolecular trapping of ketene generated from PQT 1a by benzalani...

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Figure 5: Scope of the intermolecular trapping of ketenes generated from PQTs 1a–h by Schiff bases 2a–d under...

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Scheme 3: Formation of furoquinoxalines 6a,b via intramolecular cyclization in ketenes generated from PQTs 1g,...

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Figure 6: ORTEP drawing of compound 3g (CCDC 1834011) showing thermal ellipsoids at the 30% probability level....

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Figure 7: ORTEP drawing of compound 3j (CCDC 1834012) showing thermal ellipsoids at the 30% probability level....

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Published 11 Jul 2018

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