Quinolizines. aromatic

Since the last extensive review1 on the chemistry of the quinolizines was presented, numerous developments have occurred in the field of natural products incorporating the quinolizine nucleus as well as in the synthesis and study of the simple quinolizine derivatives. The present chapter is confined exclusively to the contributions made in the field of the aromatic quinolizine derivatives. 

The quinolizinium ion, the parent compound of the aromatic quinolizines, is a cationic aromatic system like the pyrylium or thia-pyrylium cation. It is isoelectronic with naphthalene. The parent... 

The fifth volume of Advances in Heterocyclic Chemistry surveys the chemistry of four well-defined groups of compounds pyrrolizidines (N. K. Kochetkov and A. M. Likhosherstov), aromatic quinolizines (B. S. Thyagarajan), 1,2,4-thiadiazoles (F. Kurzer), and the amino-chrome pigments (R. A. Heacock). 

Thyagarajan, B. S., Aromatic Quinolizines, 5, 291 Claisen Rearrangements in Nitrogen Heterocyclic Systems, 8, 143. 

Frederick Kurzer The Aminochromes R. A. Heacock Aromatic Quinolizines B. S. Thyagarajan Advances in Pyrrolizidine Chemistry... 

Johnson, C. D., see Tomasik, P., 20, 1. John.son, F., Madrofiero, R., Heterocyclic Syntheses Invoicing Nitriiium Salts and Nitriles under Acidic Conditions, 6, 95. Jones, G., Aromatic Quinolizines, 31, I. Jones, G., Sliskovic, D. R., The Chemistry of the Triazolopyridines, 34, 79. 

---