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 (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.
Schimmeldodende samenstellings 4.5-dimethyl-n-2-propenyl-2-(trimethylsilyl)-3-thiophenecarboxamide (Formule (I)) heeft superieure en onverwachte controle van de groei van grond-gedragen graminis van paddestoelgaeumannomyces (Gg) getoond. De onderhavige uitvinding verstrekt een nieuwe samenstelling voor het samenstellen van de samenstelling van Formule (I) die samenstellings 4-hydroxy-4.5-dimethyl-2-trimethylsilanyl-dihydrothiophene-3-carboxylic zure allylamide (Formule (II)) evenals nieuwe samenstellingen van het samenstellen van allylamide gebruikt. Bovendien de Formule (II) zelf onverwacht gevonden=is= om controle van Gg. te verstrekken Daarom: de samenstellingen die Formule hebben (Iii) ## STR1 ## of zouden de agronomische zouten en de samenstellingen daarvan moeten dergelijke controle eveneens verstrekken; waarin: Q is -NH, S, of O; W is O, of S; X is -OH, -- OAc, OF, waar R lagere alkyl is; Y is S, O, of -NH; Z is -- Si(R).sub.3, -- C(R).sub.3, waar R lagere alkyl is; R.sub.1 is lagere alkyl, allyl, of een propargyl; R.sub.2 is lagere alkyl of aryl; en R.sub.3 en R.sub.4 worden onafhankelijk gekozen van waterstof, lagere alkyl en aryl; naar keuze, vormen R.sub.2 en R.sub.3 samen 5 of 6-membered ring.
