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ChemInform Abstract: Peptide Coupling Reactions with Phosphono-Phosphino Substituted γ-Thiapyrones — First Step to Unusual Peptides.

✍ Scribed by Dirk Uwe Hahn; Richard Neidlein

Publisher: John Wiley and Sons
Year: 2010
Weight: 30 KB
Volume: 30
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199927216

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✦ Synopsis

Peptide Coupling Reactions with Phosphono-Phosphino Substituted γ-Thiapyrones -First Step to Unusual Peptides.

-Chiral peptidosubstituted phosphono-phosphino γ-thiapyrones (III) are easily obtained by coupling of γ-thiapyrones (II) with protected amino acids (I) using perfluorophenyldiphenylphosphinate as reagent.

-(HAHN, DIRK UWE;

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ChemInform Abstract: Pyrylium Salts of γ

ChemInform Abstract: Pyrylium Salts of γ-Thiapyrones — A Simple Step to Phosphono-phosphino Substituted Pyridines and Pyridinium Salts.

✍ R. NEIDLEIN; D. U. HAHN 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 31 KB

Pyrylium Salts of γ-Thiapyrones -A Simple Step to Phosphonophosphino Substituted Pyridines and Pyridinium Salts. -The recently reported pyrones (I) are easily converted to pyrylium salts (III). These [cf. (IIIa)] are converted to pyridines or pyridinium salts with ammonia or primary amines.