The fungicidal compound 4,5-dimethyl-N-2-propenyl-2-(trimethylsilyl)-3-thiophenecarboxamide (Formula (I) 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 (II) itself has unexpectedly been found to provide control of Gg. Therefore, the compounds having Formula (III): ##STR1## or an agronomic salts and compositions thereof 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).sub.3, --C(R).sub.3, where R is lower alkyl; R.sub.1 is a lower alkyl, allyl, or propargyl; R.sub.2 is a lower alkyl or aryl; and R.sub.3 and R.sub.4 are independently chosen from hydrogen, a lower alkyl and aryl; optionally, R.sub.2 and R.sub.3 together form a 5- or 6-membered ring.
杀菌化合物4,5-二甲基-N-2-
丙烯基-2-(三甲基
硅基)-3-
噻吩羧酰胺(
化学式(I))显示出对土壤真菌Gaeumannomyces graminis(Gg)生长的卓越且意外的控制。本发明提供了一种用于合成化合物
化学式(I)的新化合物,该化合物使用化合物
4-羟基-4,5-二甲基-2-三甲基
硅基-二氢
噻吩-3-
羧酸丙烯酰胺(
化学式(II)),以及用于合成
丙烯酰胺的新化合物。此外,
化学式(II)本身意外地被发现具有对Gg的控制作用。因此,具有
化学式(III)的化合物:##STR1## 或其农学盐和组合物也预计会提供类似的控制作用;其中:Q为--NH,S或O;W为O或S;X为--OH,--OAc,--OR,其中R为较低的烷基;Y为S,O或--NH;Z为--Si(R)3,--C(R)3,其中R为较低的烷基;R1为较低的烷基,
丙烯基或
丙炔基;R2为较低的烷基或芳基;R3和R4独立地选择自氢,较低的烷基和芳基;可选地,R2和R3共同形成5-或6-成员环。