Abstract
AbstractIt has been found that the C4‐S bond in 1,4‐dithiinodiquinoline 1 is cleaved by carbanions of some C‐H acids (2‐phenylalkanenitriles, ketones, sulfones) generated in DMSO by means of solid NaOH or dimsyl sodium, to give 3‐arylthio‐4‐substituted quinolines 5a‐h. Phenylacetonitrile carbanion or methoxide cleave the C4‐S bond in product 5al, giving the expected products 6 and 3‐methylthio‐4‐methoxyquinoline respectively as well as ketone 7.
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