Pyrido pyrimidines, advances

The final chapter by Istvan Hermecz (Chinoin, Ltd., Budapest, Hungary) deals with bicyclic systems containing one ring junction nitrogen and one heteroatom and their benzologs, i.e. pyrido-oxazines, pyrido-thiazines, pyrido-pyridazines, pyrido-pyrazines, pyrido-pyrimidines and their analogs. Much of this material has not been reviewed for forty years, during which time immense advances have occurred. 

Mont, N., Teixido, J., Borrell, J.I. and Kappe, C.O., The Victory reaction a three component synthesis of pyrido[2,3-d]pyrimidines, Poster at CHI s Advancing Library Design and Organic Synthesis Meeting, Feb. 24-27, 2003, La Jolla, California. 

Volume 70 of Advances in Heterocyclic Chemistry consists of three chapters together with the Subject Index for Volumes 61 through 70. The first contribution by Dr. Istvan Hermecz (Chinoin, Hungary) continues with Part II of his set of three chapters on condensed pyridines. Part I, in Volume 69, covered pyrido[l,2-ft][l,2]oxazines, -thiazines, and -pyridazines, and the present chapter deals with [l,2-c]-fused 1,3-oxanes, 1,2-thiazines, and -pyrimidines. The third part will appear in a subsequent volume of our series and will deal with 1,4-oxazines and 1,4-thiazines, fused pyridine rings. 

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