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 ammonium acetate in hot acetic acid 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
通过乙酸铵在热乙酸中将苯甲酰的单芳酰基hydr环化为三取代的1:2:4-三嗪。产率是有利的,分离假定的中间体不是必需的,甚至是不利的。新的合成方法已应用于足够多的实例中,以确立其作为一般方法的地位。在菲醌的情况下,反应过程更为复杂,可能涉及两个二酮分子。