Abstract: | Based on the reaction of 8-R-4,5-dihydro-4,4-dimethyl1,2]dithiolo3,4-c]quinoline-1-thiones with oxalyl chloride followed
by the reactions of 1,3-dipolar cycloaddition and diene synthesis with participation of acetylenedicarboxylic acid dimethyl
ester, we have developed approaches to synthesis of novel polycondensed heterocyclic systems: 1,2]dithiolo3,4-c]pyrrolo3,2,1-ij]quinoline-4,5-dione,
6-(1,3-dithiol-2-ylidene)-1,2-dioxo-5-thioxo-7H-pyrrolo3,2,1-ij]quinoline and 4,5-dioxospiro(pyrrolo)-3,2,1-ij]thiopyrano2,3-c]quinoline-11,2′-1,3]dithiole.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 610–615, April, 2006. |