Chichibabin-type condensation of cyclic ketones with 3-R-1,2,4-triazin-5(4 H)-ones

Abstract

Reactions between substituted 1,2,4-triazines and ketones were investigated. General procedures for one-pot synthesis of hydrogenated derivatives of such polycyclic systems as benzo[c][1,2,4]triazino[1,6-a][2] azecine, [1,2,4]triazino[1,6-f]phenantridine, and dicyclopenta[b,d]pyrido[1,2-f] [1,2,4]triazine are described. © 2012 American Chemical Society.