Baker, Don R.; Brownell, Keith H.;

Fungicidal N-(substituted thio)-pyridyl cyclopropane carboxamides

Novel fungicidal pyridyl cyclopropane carboxamides having the general structural formula ##STR1## wherein R is selected from the group consisting of haloalkyl, preferably C.sub.1 -C.sub.3 haloalkyl, C.sub.1 -C.sub.8 alkyl, aryl, substituted aryl, and arylalkyl wherein the preferred aryl is phenyl, the alkyl is C.sub.1 -C.sub.3 alkyl and the preferred substitutions are Cl, Br, F and nitro, alkanoyl, preferably C.sub.1 -C.sub.4 alkanoyl, ##STR2## wherein R.sub.3 and R.sub.4 can be alkyl, alkanoyl, alkoxycarbanoyl, benzyl pyridyl and substituted pyridyl, R.sub.1 is C.sub.1 -C.sub.3 alkoxy or C.sub.1 -C.sub.3 haloalkoxy, preferably methoxy or halomethoxy and halogen wherein the halogen is chlorine, bromine or fluorine, R.sub.2 is hydrogen or methyl, and fungicidally acceptable organic and inorganic salts thereof which are highly effective fungicides for use both as preventive and curative fungicides are disclosed herein. These compounds provide excellent control of fungal growth.

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We claim:

1. A compound having the structural formula ##STR22## wherein R is selected from the group consisting of C.sub.1 -C.sub.3 haloalkyl, C.sub.1 -C.sub.8 alkyl, phenyl, substituted phenyl, and phenylalkyl wherein the alkyl is C.sub.1 -C.sub.3 alkyl and the phenyl substitutions are selected from the group consisting of Cl, --Br, F and nitro; and C.sub.1 -C.sub.4 alkanoyl, R.sub.1 is selected from the group consisting of C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 haloalkoxy and halogen, R.sub.2 is hydrogen or methyl; or a fungicidally acceptable organic or inorganic salt thereof.

2. The compound of claim 1 wherein R is ##STR23## R.sub.1 is --OCH.sub.3 and R.sub.2 is --H.

3. The compound of claim 1 wherein R is --CCl.sub.2 CCl.sub.2 F, R.sub.1 is --OCH.sub.3 and R.sub.2 is --H.

4. The compound of claim 1 wherein R is ##STR24## R.sub.1 is --OCH.sub.3 and R.sub.2 is --H.

5. A fungicidal composition comprising a fungicidally effective amount of a compound having the structural formula ##STR25## wherein R is selected from the group consisting of C.sub.1 -C.sub.3 haloalkyl, C.sub.1 -C.sub.8 alkyl, phenyl, substituted phenyl, and phenylalkyl wherein the alkyl is C.sub.1 -C.sub.3 alkyl and the phenyl substitutions are selected from the group consisting of Cl, --Br, F and nitro; and C.sub.1 -C.sub.4 alkanoyl, R.sub.1 is selected from the group consisting of C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 haloalkoxy and halogen, R.sub.2 is hydrogen or methyl; or a fungicidally acceptable organic or inorganic salt thereof.

6. The method of controlling fungi comprising applying to the area where control is desired a fungicidally effective amount of a compound having the formula ##STR26## wherein R is selected from the group consisting of C.sub.1 -C.sub.3 haloalkyl, C.sub.1 -C.sub.8 alkyl, phenyl, substituted phenyl, and phenylalkyl wherein the alkyl is C.sub.1 -C.sub.3 alkyl and the phenyl substitutions are selected from the group consisting of Cl, --Br, F and nitro; and C.sub.1 -C.sub.4 alkanoyl, R.sub.1 is selected from the group consisting of C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 haloalkoxy and halogen, R.sub.2 is hydrogen or methyl; or a fungicidally acceptable organic or inorganic salt thereof.

7. The compound of claim 6 wherein R is ##STR27## R.sub.1 is --OCH.sub.3 and R.sub.2 is --H.

8. The compound of claim 6 wherein R is --CCl.sub.2 CCl.sub.2 F, R.sub.1 is --OCH.sub.3 and R.sub.2 is --H.

9. The compound of claim 6 wherein R is ##STR28## R.sub.1 is --OCH.sub.3 and R.sub.2 is --H.