| 摘要 |
The fungicidal compound 4,5-dimethyl-N-2-propenyl-2-(trimethylsilyl)-3- thiophenecarboxamide (Formula (I)) has shown superior and unexpected control of the growth of the soil-borne fungus Gaeumannomyces graminis (Gg). The present invention provides a novel compound for synthesizing the compound of Formula (I) which uses the compound 4-hydroxy-4,5-dimethyl-2-trimethylsilanyl-dihydrothiophene-3-carboxylic acid allylamide (Formula (II)) as well as novel compounds of synthesizing the allylamide. In addition, Formula (H) itself has unexpectedl y been found to provide control of Gg. Therefore, the compounds having Formula (III) or an agronomic salts and compositions thereo f are expected to provide such control as well; wherein Q is -NH, S, or O; W is O, or S; X is -OH, -OAc, -OR, where R is lower alkyl; Y is S, O, or -NH; Z is -Si(R)3, -C(R)3, where R is lower alkyl; R1 is a lower alkyl, allyl, or propargyl; R2 is a lower alkyl or aryl ; and R3 and R4 are independently chosen from hydrogen, a lower alkyl and aryl; optionally, R2 and R3 together form a 5- or 6-membered ring.
|
