Abstract:Dimethyl sulphoxide as a reagent brings about N-methylthiomethylation and N,N/-methylthiomethylation in substituted barbituric acids. It converts 4-acetoxy coumarins to corresponding ylides and brings about methylene insertion in 1,6-naphtharidenes at reflux temperature.DMSO activated by trifluoro-aceticanhydride brings about formation of mono, bis and tris-sulphonic substituted derivatives when interacted with cyclo pentadiene and trimethylsilyl cyclopentadiene.This reagent converts 3-Nitro-4-hydroxy coumarin… Show more
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