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SYNTHESIS OF SULFOLANOOCTAHYDROCHROMENONES FROM 2-BENZYLIDENE-3-METHYL-4-NITRO-2,5-DIHYDROTHIOPHENE 1,1-DIOXIDES

Игорь И. Савельев, Ирина Е. Ефремова, Лидия В. Лапшина, Владислав В. Гуржий, Руслан И. Байчурин
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Abstract


The reactions of 2-benzylidene-3-methyl-4-nitro-2,5-dihydrothiophene 1,1-dioxides with dimedone were used to synthesize a series of tricyclic compounds containing fused nitrosulfolane and octahydrochromenone rings. The structural features of the obtained polycyclic compounds were established on the basis of IR and NMR spectra, as well as X-ray structural analysis.

Keywords


2-benzylidene-3-methyl-4-nitro-2,5-dihydrothiophene 1,1-dioxides; enolizable cyclic СН acids; sulfolenes; tandem process.

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