A novel ketene S,S-acetal derivative which is useful as an antimycotic agent and an agricultural chemical of fungicidal, plant growth regulating or insecticidal properties represented by the general formula (I): ##STR1## wherein R represents a hydrogen atom; an alkyl group having 1 to 8 carbon atoms; a cycloalkyl group having 3 to 6 carbon atoms; a methylene group; a lower alkenyl group; a lower alkyl group substituted by a halogen atom, a cyano group, a lower alkoxy group, a lower alkylthio group; a carbamoyl group, an acyl group, or an alkenoyloxy group; a phenyl group represented by ##STR2## (in which R.sub.1 represents a hydrogen atom, a halogen atom, a straight or branched chain lower alkyl group, a lower alkoxyl group which may be substituted by one or more halogen atoms, a phenoxy group or a methylenedioxy group, and m represents an integer of 1 to 3); a benzyl group; a methylenedioxybenzyl group; a phenoxyalkyl group; a phenoxyalkyl group substituted by a halogen atom; a naphthyl group; or a substituted or unsubstituted pyridyl group.
一种新型的S,S-
缩醛衍
生物,可用作抗真菌剂和农业
化学品,具有杀真菌、调节植物生长或杀虫的性质,其一般式为(I):##STR1## 其中R表示氢原子;具有1至8个碳原子的烷基;具有3至6个碳原子的环烷基;亚甲基基团;较低的烯基基团;被卤素原子、
氰基、较低的烷氧基、较低的烷
硫基取代的较低的烷基基团;
氨基甲酰基团、酰基团或烯酰氧基团;由##STR2## 表示的苯基;(其中R.sub.1表示氢原子、卤素原子、直链或支链较低的烷基基团、可以被一个或多个卤素原子取代的较低的烷氧基团、苯氧基团或亚甲基二氧基基团,m表示1至3的整数);苄基;亚甲基二氧基苄基;苯氧基烷基团;被卤素原子取代的苯氧基烷基团;
萘基;或取代或未取代的
吡啶基团。