Abstract: 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.

Abstract: 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; andR.sub.3 and R.sub.

Abstract: Fungicides having thiophene rings may be made from the intermediate compound 3-carbomethoxy-4,5-dimethylthiophene. That compound, and related compounds, may be produced by reacting an alpha mercaptoketone, e.g., 3-mercapto-2-butanone, with an acrylate, e.g., methyl-3-methoxy acrylate, in the presence of an alkoxide base, e.g., NaOMe, to form the substituted tetrahydrothiophene, followed by conversion to the aromatic thiophene with an acid treatment. The substituted tetrahydrothiophene is a novel compound.

Abstract: Fungicides having thiophene rings may be made from the intermediate compound 3-carbomethoxy-4,5-dimethylthiophene. That compound, and related compounds, may be produced by reacting an alpha mercaptoketone, e.g., 3-mercapto-2-butanone, with an acrylate, e.g., methyl-3-methoxy acrylate, in the presence of an alkoxide base, e.g., NaOMe, to form the substituted tetrahydrothiophene, followed by conversion to the aromatic thiophene with an acid treatment. The substituted tetrahydrothiophene is a novel compound.

Abstract: A method of controlling Take-All disease of plants by applying a fungicide of the formula ##STR1## wherein Z1 and Z2 are C and are part of an aromatic ring which is benzothiophene; andA is selected from --C(X)-amine wherein the amine is an unsubstituted, monosubstituted or disubstituted amino radical, --C(O)--SR.sub.3, --NH--C(X)R.sub.4, and --C(.dbd.NR.sub.3)--XR.sub.7 ;B is --W.sub.m --Q(R.sub.2).sub.3 or selected from O-tolyl, 1-naphthyl, 2-naphthyl, and 9-phenanthryl, each optionally substituted with halogen or R.sub.4 ;Q is C, Si, Ge, or Sn;W is --C(R.sub.3).sub.p H.sub.(2-p) --; or when Q is C, W is selected from --C(R.sub.3).sub.p H(.sub.2-p), --N(R.sub.3).sub.m H(.sub.1-m)--, --S(O)p--, and --O--;X is 0 or S;n is 0, 1, 2, or 3;m is 0 or 1;p is 0, 1, or 2;each R and R.sub.2 is independently defined herein;R.sub.3 is C.sub.1 -C.sub.4 alkyl;R.sub.4 is C.sub.1 -C.sub.4 alkyl, haloalkyl, alkoxy, alkylthio, alkylamino, or dialkylamino; andR.sub.7 is C.sub.1 -C.sub.

Abstract: Novel 3-difluoromethyl-1-methyl-N-(substituted-indane-4-yl)pyrazole-4-carboxamid es useful as fungicides, particularly effective in alleviating infections in diseased plants.

Abstract: N-phosphonomethylglycinonitrile and certain derivatives thereof are novel compounds which can be used as herbicides themselves and/or can be converted to known herbicides. Such novel compounds, and others, can be prepared by a novel process.

Abstract: A method of controlling Take-All disease of plants by applying a fungicide of the formula ##STR1## wherein Z.sub.1 and Z.sub.2 are C and are part of an aromatic ring which is .[.benzothiophene.]..Iadd.thiophene.Iaddend.; andA is .[.selected from.]. --C(X)-amine .[.wherein the amine is an unsubstituted, monosubstituted or disubstituted amino radical.]..Iadd.wherein the amine is a monosubstituted or a disubstituted amine, wherein one of the substituents has a cyclic moiety, said cyclic moiety which is chosen from the group consisting of thienyl, furanyl, and a non-heterocyclic substituent, wherein when the amine is disubstituted, the second substituent is a non-cyclic substituent.Iaddend., --C(O)--SR.sub.3, --NH--C(X)R.sub.4, .[.and.]. .Iadd.or .Iaddend.--C(.dbd.NR.sub.3)--XR.sub.7 ;B is --W.sub.m --Q(R.sub.2).sub.3 or selected from .[.O-tolyl.]..Iadd.o-tolyl.Iaddend., 1-naphthyl, 2-naphthyl, and 9-phenanthryl, each optionally substituted with halogen or R.sub.4 ;Q is C, Si, Ge, or Sn;W is --C(R.sub.3).sub.p H.