Pyridine-N-oxide-substituted salicylaldehyde and salicylic acid derivatives of the general formula I ##STR1## where R is a formyl group, a CO.sub.2 H group or a radical which can be hydrolyzed to CO.sub.2 H and the other substituents have the following meanings: R.sup.2 is halogen, alkyl, haloalkyl, alkoxy, haloalkoxy or alkylthio; X is nitrogen or CR.sup.13, R.sup.13 being hydrogen or halogen or together with R.sup.3 forming a 3- to 4-membered alkylene or alkenylene chain in which at least one methylene group is replaced by oxygen; R.sup.3 is halogen, alkyl, haloalkyl, alkoxy, haloalkoxy or alkylthio, or R.sup.3 is linked with R.sup.13 as indicated above to give a 5- or 6-membered ring; Y is oxygen or sulfur; R.sup.14 -R.sup.17 are an unsubstituted or alkyl-substituted cycloalkyl group; an unsubstituted or substituted alkyl group; an unsubstituted or substituted alkoxy or alkylthio group; a dialkylamino group or a dialkylaminoxy group; an unsubstituted or substituted alkenyl or alkynyl group, hydrogen, halogen, nitro or cyano, are described.
取代了
吡啶-N-氧化物的
水杨醛和
水杨酸衍
生物的一般式I如下:##STR1## 其中R是甲酰基,CO.sub.2 H基团或可
水解为CO.sub.2 H的基团,其他取代基的含义如下:R.sup.2是卤素,烷基,卤代烷基,烷氧基,卤代烷氧基或烷
硫基;X是氮或CR.sup.13,R.sup.13是氢或卤素,或与R.sup.3形成一个3-至4-成员的烷基或烯基链,其中至少有一个亚甲基被氧替换;R.sup.3是卤素,烷基,卤代烷基,烷氧基,卤代烷氧基或烷
硫基,或者R.sup.3与上述指示的R.sup.13连接以形成一个5-或6-成员环;Y是氧或
硫;R.sup.14-R.sup.17是未取代或烷基取代的环烷基;未取代或取代的烷基;未取代或取代的烷氧基或烷
硫基;二烷基
氨基基团或二烷基
氨基氧基团;未取代或取代的烯基或炔基,氢,卤素,硝基或
氰基。