Disclosed is the compound of the formula: ##STR1## wherein X is oxygen, sulfur or ##STR2## R.sub.1 is 3-pyridyl or 4-pyridyl, R.sub.2 is C.sub.1 .about.C.sub.12 -alkyl; C.sub.3 - or C.sub.4 -alkenyl; C.sub.5 - or C.sub.6 -cycloalkyl which may be substituted by C.sub.1 - or C.sub.2 -alkyl; pyridyl; pyridylmethyl; phenethyl cyanoalkyl having 1 or 2 carbon atoms; methoxyethyl; 1-methylmethoxypropyl; phenyl; phenyl which is substituted by one or more of C.sub.1 .about.C.sub.4 -alkyl, C.sub.1 .about.C.sub.4 -alkoxy, nitro, halogen, trifluoromethyl, allyl and methoxycarbonyl; benzyl; benzyl which is substituted by one or more of methyl, nitro, methoxy and chloro; .alpha.-methylbenzyl; C.sub.1 .about.C.sub.6 -alkyl which is substituted by halogen when X is oxygen or ##STR3## C.sub.2 - or C.sub.3 -alkyl which is substituted by dimethylamino, furfuryl or thienylmethyl; R.sub.3 is hydrogen, C.sub.1 .about.C.sub.4 -alkyl, cyanomethyl, methoxycarbonylmethyl, or 1-propoxycarbonylmethyl. These compounds are bactericides.
本发明涉及一种化合物,其
化学式为:##STR1## 其中X为氧、
硫或##STR2## R.sub.1为3-
吡啶基或4-
吡啶基,R.sub.2为C.sub.1-C.sub.12烷基;C.sub.3-或C.sub.4-烯基;C.sub.5-或C.sub.6-环烷基,其可以被C.sub.1-或C.sub.2-烷基;
吡啶基;
吡啶甲基;苯乙基;
氰基烷基,其有1或2个碳原子;甲氧基乙基;1-甲基甲氧基丙基;苯基;苯基,其被1个或多个C.sub.1-C.sub.4烷基、C.sub.1-C.sub.4-烷氧基、硝基、卤素、三
氟甲基、烯丙基和甲氧羰基取代;苄基;苄基,其被甲基、硝基、甲氧基和
氯取代;α-甲基苄基;C.sub.1-C.sub.6烷基,当X为氧或##STR3##时,其被卤素取代;C.sub.2-或C.sub.3-烷基,其被二甲基
氨基、
糠醛基或
噻吩基甲基取代;R.sub.3为氢、C.sub.1-C.sub.4-烷基、
氰基甲基、甲氧羰基甲基或1-丙氧羰基甲基。这些化合物是杀菌剂。