Collect. Czech. Chem. Commun. 1984, 49, 1600-1604

Vinamidium salts having a furan ring and their substitution electrophilic reactions

Tibor Graczaa, Zdeněk Arnoldb and Jaroslav Kováča

a Department of Organic Chemistry, Slovak Institute of Technology, 812 37 Bratislava
b Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Prague 6


5-(N,N-Dialkylamino)-2-furfuryldiene-N,N-dialkylimmonium salts I (the so called vinamidinium salts) are characteristic of their reactivity towards electrophilic reagents. A series of new furan derivatives with substituents in β-position of the furan ring were prepared via this reagent. The presented reactions involve halogenation, nitration, formylation and acylation with the Vilsmeier-type reagents.