AZULENE-1-AZOPYRIDINES. SYNTHESIS AND N-ALKYLATION AT PYRIDINE MOIETY

ABSTRACT

Azulene-1-azo-(3′- and 4′-pyridines) were synthesised from azulenes and diazotized aminopyridines. The mechanism for the generation of the diazonium salt was discussed. The obtained azulene-1-azo pyridines were alkylated with alkyl, benzyl and allyl halides.

ACKNOWLEDGMENTS

The authors thank Prof. Klaus Hafner as well as to Institute of Organic Chemistry from T. U. Darmstadt for providing us some of the starting azulenes. This investigation was partly supported by National Agency of Science, Technology and Innovations, Bucharest. The authors thank to the Instrumental Analysis Department of Institute of Organic Chemistry, Bucharest.