ChemInform Abstract: A New Synthetic Route to Thiophthalic Anhydride Derivatives, Monomers to Poly(isothianaphthene).
β Scribed by H. PAULUSSEN; R. VAN ASSELT; D. VANDERZANDE; J. GELAN
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 28 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0931-7597
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β¦ Synopsis
A New Synthetic Route to Thiophthalic Anhydride Derivatives, Monomers to Poly(isothianaphthene).
-The phthalides (I) are melted with sulfur as the oxidizing reagent to afford the title compounds (II). In addition, a comparison with a literature known synthesis of (IIb) is made.
π SIMILAR VOLUMES
A Cyclopropenone Route to New Pyrrolizidine Derivatives. -Enaminone (I) is converted to pyrrol-2-one (III) with the substituted cyclopropenone (II). Via a subsequent acidic intramolecular aldol reaction bicyclic dihydropyrrolones (IV) and (V) are easily obtained when HCl is employed. With TFA selec