申请人:Hoecht Aktiengesellschaft
公开号:US05719284A1
公开(公告)日:1998-02-17
The invention relates to a process for the preparation of substituted 3-arylquinazoline-2,4-diones of the formula (I) ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined in claim 1 and Ar is ##STR2## where R.sup.5 to R.sup.9 are as defined in claim 1, by reacting a compound of the formula (II) ##STR3## with a compound Z in the presence of a catalyst, a ligand and a solvent, where Z is a) an anthranilic acid derivative of the formula (III) ##STR4## or b) an alcohol R.sup.10 --OH and where, in case b), the resulting carbamate is then reacted with an anthranilic acid derivative of the formula III.
本发明涉及一种制备式(I)的取代3-芳基喹唑啉-2,4-二酮的方法,其中R.sup.1、R.sup.2、R.sup.3和R.sup.4如权利要求1所定义,Ar为##STR2##其中R.sup.5至R.sup.9如权利要求1所定义,通过在催化剂、配体和溶剂的存在下,将式(II)的化合物##STR3##与化合物Z反应制备而成,其中Z为a)式(III)的蒽酰氨衍生物##STR4##或b)醇R.sup.10-OH,其中在情况b)下,所得的氨基甲酸酯随后与式III的蒽酰氨衍生物反应。