 Dimethyl Sulphoxide a Useful Reagent for Organic SynthesisN.D. Zargar and K.Z. Khan International Review of Applied Sciences, 2016, vol. 3, issue 2, 12-18 Abstract: Dimethyl sulphoxide as a reagent brings about N-methylthiomethylation and N,N/-methyl -thiomethylation 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 coumarins to salicylic acid in dichloromethane at low temperature.DMSO-acetic anhydride reagent converts enols to sulphur ylides, introduces methylthiomethyl group into phenols and oxidizes secondary alcohols to corresponding ketones. It brings about oxidative rearrangement in polyporic acid and converts 4-hydroxy coumarins and its 3-substituted derivatives into a wide range of products under different conditions.DMSO-SO3 pyridine complex in presence of triethyl amine oxidizes cis-diols to corresponding quinones.DMSO-activated by N-bromosuccinimide brings about methylation of alcohols and converts diols to their corresponding methylene-acetals. Keywords: Ylide; Methylthiomethylation; Acetoxy coumarins; Polyporic acid; N-bromosuccinimide DMSO; Acetic anhydride. (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:aoj:inroas:v:3:y:2016:i:2:p:12-18:id:788 Access Statistics for this article More articles in International Review of Applied Sciences from Asian Online Journal Publishing Group |
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