A compound of Formula I wherein, R a is selected from the group consisting of hydrogen, alkyl, alkoxyalkyl, alkylcarbonyl, haloalkylcarbonyl, alkoxycarbonyl, haloalkoxycarbonyl, alkylthiocarbonyl, haloalkyl, alkylthio, haloalkylthio, alkoxy, haloalkoxyalkyl, alkoxycarbonyl and haloalkoxycarbonyl; R 1 is hydrogen or alkyl; R 2 and R 3 are each independently selected from the group consisting of hydrogen, hydroxy, alkyl, haloalkyl, alkoxyalkyl, alkenyl, alkynyl, alkylthio, alkylamino, dialkylamino, aminoalkyl, alkylaminoalkyl, dialkylaminoalkyl, and cyano, or R 2 and R 3 taken together with the carbon to which both are bound form a substituted or unsubstituted 3- to 7-member cyclic, heterocyclic or heteroaromatic ring, wherein the substituents may each be independent of one another cyano, nitro, halogen, alkyl, haloalkyl, alkylthio, haloalkylthio, alkoxy, haloalkoxy, amino, alkylamino, and dialkylamino; a is an integer from zero to four, b is an integer from zero to four, d is an integer from zero to four, R 4, R 5, R 6, R 7, R 8 and R 9 are each independently selected from hydrogen, halogen, alkyl, alkenyl, hydroxyalkyl, alkylthioalkyl, haloalkyl, alkyloxyalkyl, alkylsulfinylalkyl, alkylsulfonylalkyl, alkylsulfonyloxyalkyl, nitro, alkylthio, haloalkylthio, alkoxy, haloalkoxy, amino, alkylamino, and diamino; R 10 and R 11 are each independently selected from the group consisting of hydrogen, hydroxy, amino, cyano, nitro, halogen, thiol, alkylamino, dialkylamino, alkyl, alkenyl, alkynyl, cycloalkyl, hydroxyalkyl, haloalkyl, alkylthio, haloalkylthio, arylthio, alkoxy, phenoxy, alkoxyalkoxy, cycloalkyloxy, haloalkoxy, formyl, alkylcarbonyl, alkoxycarbonyl, sulfonyl, sulfinyl, and unsubstituted or substituted phenyl, unsubstituted or substituted benzyl, unsubstituted or substituted arylthio, unsubstituted or substituted aryloxy, or unsubstituted or substituted heteroaryl, wherein the substituents, independent of one another, may be one or more of cyano, nitro, halogen, alkyl, haloalkyl, alkylthio, haloalkylthio, alkoxy, haloalkoxy, amino, alkylamino, dialkylamino, alkylaminoalkoxy, dialkylaminoalkoxy, and alkylaminoalkyl, provided that, at least one of b and d is other than zero, and at least one of R 10 and R 11 is other than hydrogen; wherein alkyl refers to straight and branched carbon chains and cyclic hydrocarbon groups. R a is selected from the group consisting of hydrogen, alkyl, alkoxyalkyl, alkylcarbonyl, haloalkylcarbonyl, alkoxycarbonyl, haloalkoxycarbonyl, alkylthiocarbonyl, haloalkyl, alkylthio, haloalkylthio, alkoxy, haloalkoxyalkyl, alkoxycarbonyl and haloalkoxycarbonyl; R 1 is hydrogen or alkyl; R 2 and R 3 are each independently selected from the group consisting of hydrogen, hydroxy, alkyl, haloalkyl, alkoxyalkyl, alkenyl, alkynyl, alkylthio, alkylamino, dialkylamino, aminoalkyl, alkylaminoalkyl, dialkylaminoalkyl, and cyano, or R 2 and R 3 taken together with the carbon to which both are bound form a substituted or unsubstituted 3- to 7-member cyclic, heterocyclic or heteroaromatic ring, wherein the substituents may each be independent of one another cyano, nitro, halogen, alkyl, haloalkyl, alkylthio, haloalkylthio, alkoxy, haloalkoxy, amino, alkylamino, and dialkylamino; a is an integer from zero to four, b is an integer from zero to four, d is an integer from zero to four, R 4, R 5, R 6, R 7, R 8 and R 9 are each independently selected from hydrogen, halogen, alkyl, alkenyl, hydroxyalkyl, alkylthioalkyl, haloalkyl, alkyloxyalkyl, alkylsulfinylalkyl, alkylsulfonylalkyl, alkylsulfonyloxyalkyl, nitro, alkylthio, haloalkylthio, alkoxy, haloalkoxy, amino, alkylamino, and diamino; R 10 and R 11 are each independently selected from the group consisting of hydrogen, hydroxy, amino, cyano, nitro, halogen, thiol, alkylamino, dialkylamino, alkyl, alkenyl, alkynyl, cycloalkyl, hydroxyalkyl, haloalkyl, alkylthio, haloalkylthio, arylthio, alkoxy, phenoxy, alkoxyalkoxy, cycloalkyloxy, haloalkoxy, formyl, alkylcarbonyl, alkoxycarbonyl, sulfonyl, sulfinyl, and unsubstituted or substituted phenyl, unsubstituted or substituted benzyl, unsubstituted or substituted arylthio, unsubstituted or substituted aryloxy, or unsubstituted or substituted heteroaryl, wherein the substituents, independent of one another, may be one or more of cyano, nitro, halogen, alkyl, haloalkyl, alkylthio, haloalkylthio, alkoxy, haloalkoxy, amino, alkylamino, dialkylamino, alkylaminoalkoxy, dialkylaminoalkoxy, and alkylaminoalkyl, provided that, at least one of b and d is other than zero, and at least one of R 10 and R 11 is other than hydrogen; wherein alkyl refers to straight and branched carbon chains and cyclic hydrocarbon groups. at least one of b and d is other than zero, and at least one of R 10 and R 11 is other than hydrogen; wherein alkyl refers to straight and branched carbon chains and cyclic hydrocarbon groups.