A process for producing 3-phenyl-2,4(1H,3H)-pyrimidinediones having the general formula I and their salts
1
which comprises reacting the isocyanates represented by the general formula (II)
2
and the substituted hydrazono esters represented by the general formula (III)
3
in the presence of a base.
These compounds are useful as herbicides, defoliants and desiccants.
一种制备具有一般式I及其盐的3-苯基-2,4(1H,3H)-
嘧啶二酮的方法,其包括在碱存在下,反应由一般式(II)2表示的
异氰酸酯和由一般式(III)3表示的取代的酰
肼酯。这些化合物可用作
除草剂、落叶剂和干燥剂。