Chichibabin-Type Condensation of Cyclic Ketones with 3-R-1,2,4-triazin-5(4<i>H</i>)-ones

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.本研究对取代1,2,4-三嗪（substituted 1,2,4-triazines）与酮类化合物之间的反应进行了探究。本文报道了三类多环体系（polycyclic systems）氢化衍生物（hydrogenated derivatives）的一锅合成法（one-pot synthesis）通用步骤，所涉多环体系包括苯并[c][1,2,4]三嗪并[1,6-a][2]氮杂癸因（benzo[c][1,2,4]triazino[1,6-a][2]azecine）、[1,2,4]三嗪并[1,6-f]菲啶（[1,2,4]triazino[1,6-f]phenantridine）以及二环戊[b,d]吡啶并[1,2-f][1,2,4]三嗪（dicyclopenta[b,d]pyrido[1,2-f][1,2,4]triazine）。