申请人:Hamprecht Gerhard
公开号:US20060293520A1
公开(公告)日:2006-12-28
A process is described for preparing 3-phenyl(thio)uracils or 3-phenyldithiouracils of the formula I, by reacting a phenyl iso(thio)cyanate of the formula II with an enamine of the formula III and, if appropriate, in a further step, the resulting 3-phenyl(thio)uracil or 3-phenyldithiouracil of the formula I where R
1
=R
1a
, when R
1
=hydrogen, is reacted with an aminating agent of the formula IV to give 3-phenyl(thio)uracils or 3-phenyldithiouracils of the formula I where R
1
=amino
where the variables R
1
, R
1a
, R
2
, R
3
, R
4
, X
1
, X
2
, X
3
, Ar, A and L1 are each as defined in claim
1.
本发明涉及一种制备式I的3-苯基(硫)尿嘧啶或3-苯基二硫尿嘧啶的方法,该方法通过将式II的苯基异(硫)氰酸酯与式III的烯胺反应,如果适用,在进一步步骤中,将生成的式I的3-苯基(硫)尿嘧啶或3-苯基二硫尿嘧啶(其中R1=氢时R1a=R1)与式IV的氨化剂反应,以得到式I的3-苯基(硫)尿嘧啶或3-苯基二硫尿嘧啶(其中R1=氨基),其中变量R1、R1a、R2、R3、R4、X1、X2、X3、Ar、A和L1均如权利要求1所定义。