A Convenient Synthesis of the 2-Dimethyl-2H-Chroinene-System

A Convenient Synthesis of the 2-Dimethyl-2H-Chroinene-System

2,2-Dimethyl-5H-pyrano(3,2-c)-l-benzopyrano-5-one(2) and 4H-2,3-dihydro-3-methyl-2-methylene-furan-1-benzopyran-4-one (3), two new coumarin derivatives were synthesised from 4-hydroxycoumarin by treating with 3-chloro-3-methylbut-1-yne and 3-chlorobut-1-yne respectively, both reactions progressing v...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Zeitschrift für Naturforschung. B, A journal of chemical sciences A journal of chemical sciences, 1985-05, Vol.40 (5), p.636-638
Hauptverfasser: Reisch, Johannes, Dharmaratne, H. Ranjith W.
Format: Artikel
Sprache:eng
Schlagworte:
2-Dimethyl-2H-Chromenes
Coumarin Derivatives
Phase-Transfer Catalysis
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:2,2-Dimethyl-5H-pyrano(3,2-c)-l-benzopyrano-5-one(2) and 4H-2,3-dihydro-3-methyl-2-methylene-furan-1-benzopyran-4-one (3), two new coumarin derivatives were synthesised from 4-hydroxycoumarin by treating with 3-chloro-3-methylbut-1-yne and 3-chlorobut-1-yne respectively, both reactions progressing via the phase-transfer catalysis.
ISSN:0932-0776
1865-7117
DOI:10.1515/znb-1985-0512