SYNTHESIS OF NEW HETEROAROMATIC SYSTEMS: NAPHTH[2,1- e ]IMIDAZO[5,1- c ]-1,2,4-TRIAZINES AND BENZ[ e ]IMIDAZO-[5,1- c ]-1,2,4-TRIAZINES
Dzintra 10.6626 200 1920x1200 Cyclization of azo compounds, synthesized from 5-diazoimidazoles and 2-naphthol or p -substituted phenols, into naphth[2,1- e ]imidazo[5,1- c ]-1,2,4-triazines and benz[ e ]imidazo[5,1- c ]-1,2,4-triazines occurs only in the presence of p -toluenesulfonic acid. Imidazo[4,5- d ]-1,2,3-triazines are also formed in this reaction when an amide substituent is present in the imidazole ring. Auhors: M. A. Bezmaternykh, V. S. Mokrushin, and E. V. Sadchikova. English Translation in Chemistry of Heterocyclic Compounds , 2000, 36 (4), pp 465-471 http://link.springer.com/article/10.1007/BF02269547 Normal 0 Normal 0