申请人:PPG Industries, Inc.
公开号:US04268679A1
公开(公告)日:1981-05-19
Disclosed are compounds such as 3-[5-(1,1-dimethylethyl)-3-isoxazolyl]-1-methyl-4-hydroxy-2-imidazolidinon e; their control of weeds such as johnsongrass; the process of making them; and intermediates for making them, the compounds being represented by a Formula I: ##STR1## wherein A is ##STR2## where R is an alkyl of up to six carbon atoms; an alkenyl of up to five carbon atoms; an alkynyl of up to five carbon atoms; a cycloalkyl selected from the group consisting of cyclopropyl, cyclobutyl, cyclopentyl, and cyclohexyl; a haloalkyl of up to six carbon atoms; --R.sup.4 --O--R.sup.5, or --R.sup.4 --S--R.sup.5, where R.sup.4 is an alkylene of up to six carbon atoms and R.sup.5 is an alkyl of up to six carbon atoms; ##STR3## where Z is nitro (NO.sub.2), chloro (Cl), bromo (Br), fluoro (F), or R.sup.5, and n is 0, 1, 2, or 3; R.sup.1 is an alkyl of up to three carbon atoms, or allyl; R.sup.2 is hydroxy (OH), chloro (Cl) or bromo (Br); and R.sup.3 is hydrogen (H), an alkyl of up to four carbon atoms, allyl, or hydroxy (OH).
本公开涉及化合物,例如3-[5-(1,1-二甲基乙基)-3-异噁唑基]-1-甲基-4-羟基-2-咪唑啉酮;它们对约翰草等杂草的控制;制备它们的过程;以及用于制备它们的中间体,这些化合物由Formula I所代表:##STR1##其中A是##STR2##其中R是最多含有六个碳原子的烷基;最多含有五个碳原子的烯基;最多含有五个碳原子的炔基;从环丙基、环丁基、环戊基和环己基组成的环烷基;最多含有六个碳原子的卤代烷基;--R.sup.4 --O--R.sup.5,或--R.sup.4 --S--R.sup.5,其中R.sup.4是最多含有六个碳原子的亚烷基,R.sup.5是最多含有六个碳原子的烷基;##STR3##其中Z是硝基(NO.sub.2),氯(Cl),溴(Br),氟(F),或R.sup.5,n为0,1,2或3;R.sup.1是最多含有三个碳原子的烷基,或烯丙基;R.sup.2是羟基(OH),氯(Cl)或溴(Br);R.sup.3是氢(H),最多含有四个碳原子的烷基,烯丙基,或羟基(OH)。