Studies in the triazine series including a new synthesis of 1:2:4-triazines
作者:P.V. Laakso、R. Robinson、H.P. Vandrewala
DOI:10.1016/0040-4020(57)85014-5
日期:1957.1
mono-aroylhydrazones of benzil are cyclised by ammoniumacetate in hot aceticacid to tri-substituted-1:2:4-triazines. The yield is favourable and it is not necessary, or even advantageous, to isolate the presumed intermediates. The new synthesis has been applied to a sufficient range of examples to establish its status as a general method. In the case of phenanthraquinone the reaction took a more complex course and