申请人:BASF Aktiengesellschaft
公开号:US04870100A1
公开(公告)日:1989-09-26
2-benzylfuryl compounds of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are identical or different substituents and are each hydrogen, halogen, alkyl, haloalkyl, alkoxy, haloalkoxy, haloalkylthio, alkenyl or haloalkenyl, each of not more than 6 carbon atoms, n being 1, 2 or 3 where R.sup.3 is not hydrogen, and R.sup.4 and R.sup.5 are each hydrogen or alkyl of not more than 6 carbon atoms, R is --CHO or CHR.sup.6 OA, R.sup.6 is hydrogen, cyano, alkyl, alkenyl, haloalkenyl or alkynyl, each of not more than 6 carbon atoms, or carboxamide, and A is either hydrogen or a radical of an acid typical for pyrethroids, with the proviso that R.sup.2 is not hydrogen, chlorine, bromine, methyl or methoxy when R.sup.1 is hydrogen or methyl and R.sup.3 and A are each hydrogen, and furthermore with the proviso that R.sup.1 and R.sup.2 are not methyl when A is a radical of tetramethylcyclopropanecarboxylic acid, and finally with the proviso that R.sup.2 is not methyl, chlorine, bromine or methoxy and R.sup.1 and R.sup.3 are not hydrogen when A is a radical of chrysanthemumic acid, their preparation and their use as intermediates for crop protection agents or as crop protection agents.
通式I的2-苄基呋喃化合物,其中R.sup.1,R.sup.2和R.sup.3是相同或不同的取代基,分别为氢,卤素,烷基,卤代烷基,烷氧基,卤代烷氧基,卤代烷硫基,烯基或卤代烯基,每个基中的碳原子数均不超过6个,n为1,2或3,其中R.sup.3不是氢,R.sup.4和R.sup.5分别为氢或不超过6个碳原子的烷基,R为--CHO或CHR.sup.6OA,R.sup.6为氢,氰基,烷基,烯基,卤代烯基或炔基,每个基中的碳原子数均不超过6个,或羧酰胺,A为氢或典型的拟除虫菊酯酸的酸基团,但是当R.sup.1为氢或甲基,R.sup.2,R.sup.3和A均为氢时,R.sup.2不是氢,氯,溴,甲基或甲氧基,而且当A为四甲基环丙烷羧酸的基团时,R.sup.1和R.sup.2不是甲基,最后当A为菊酯酸的基团时,R.sup.2不是甲基,氯,溴或甲氧基,R.sup.1和R.sup.3不是氢,它们的制备方法以及它们作为农作物保护剂的中间体或农作物保护剂的用途。