申请人:Budapesti Vegyimuvek
公开号:US04806151A1
公开(公告)日:1989-02-21
According to the present invention there are provided fungicidal compositions comprising as active ingredient in an amount of 0.01-80% by weight a new benzoic acid derivative of the general Formula I ##STR1## wherein R.sub.1 and R.sub.2 stand for hydrogen, C.sub.1-8 alkyl, C.sub.2-8 alkenyl or benzyl; R.sub.3 represents hydrogen, C.sub.1-8 alkyl or C.sub.2-8 alkenyl; R.sub.1 and R.sub.2 may be the same or different; and R.sub.3 may be identical with or different from R.sub.1 and/or R.sub.2. According to the present invention there is provided a process for the preparation of the compounds of the general Formula I which comprises esterifying 4-chloro-3,5-dinitro-benzoic acid with a saturated or unsaturated aliphatic alcohol at a temperature between 20.degree. C. and 120.degree. C.--preferably at 60.degree.-100.degree. C.--in the presence of a solvent as medium and in the presence of a catalyst, and aminating the ester thus obtained with ammonia or the corresponding primary or secondary amine at a temperature between 40.degree. C. and 100.degree. C.--preferably at 60.degree.-90.degree. C.--in the melt or in an inert solvent as medium, in the presence of an acid binding agent; or changing the order of succession of the said two steps and carrying out at first amination and thereafter esterification. A preferred representative of the compounds of the general Formula I is the n-propyl-4-diallylamino-3,5-dinitro-benzoate.
根据本发明,提供了含有新苯甲酸衍生物作为活性成分的杀真菌组合物,其含量为0.01-80%重量。通式I的一般公式如下:其中R1和R2代表氢、C1-8烷基、C2-8烯基或苄基;R3代表氢、C1-8烷基或C2-8烯基;R1和R2可以相同也可以不同;R3可以与R1和/或R2相同也可以不同。根据本发明,提供了一种制备通式I化合物的方法,包括在20°C至120°C之间的温度下,通过酯化4-氯-3,5-二硝基苯甲酸与饱和或不饱和脂肪醇反应,优选在60°C至100°C之间,在介质和催化剂的存在下进行;并在40°C至100°C之间的温度下,通过氨或相应的一次或二次胺对所得酯进行氨基化,优选在60°C至90°C之间,在熔融状态或在惰性溶剂中,在酸性结合剂的存在下进行;或者改变上述两个步骤的顺序,首先进行氨基化,然后进行酯化。通式I化合物的优选代表是正丙基-4-二烯基氨基-3,5-二硝基苯甲酸酯。