alkynyl and the alkynyl moieties in composite groups, such as alkynyloxy: straight-chain or branched hydrocarbon groups having 2 to 10 carbon atoms and one or two triple bonds in any position, for example C₂-C₆-alkynyl, such as ethynyl, 1-propynyl, 2-propynyl, 1-butynyl, 2-butynyl, 3-butynyl, 1-methyl-2-propynyl, 1-pentynyl, 2-pentynyl, 3-pentynyl, 4-pentynyl, 1-methyl-2-butynyl, 1-methyl-3-butynyl, 2-methyl-3-butynyl, 3-methyl-1-butynyl, 1,1-dimethyl-2-propynyl, 1-ethyl-2-propynyl, 1-hexynyl, 2-hexynyl, 3-hexynyl, 4-hexynyl, 5-hexynyl, 1-methyl-2-pentynyl, 1-methyl-3-pentynyl, 1-methyl-4-pentynyl, 2-methyl-3-pentynyl, 2-methyl-4-pentynyl, 3-methyl-1-pentynyl, 3-methyl-4-pentynyl, 4-methyl-1-pentynyl, 4-methyl-2-pentynyl, 1,1-dimethyl-2-butynyl, 1,1-dimethyl-3-butynyl, 1,2-dimethyl-3-butynyl, 2,2-dimethyl-3-butynyl, 3,3-dimethyl-1-butynyl, 1-ethyl-2-butynyl, 1-ethyl-3-butynyl, 2-ethyl-3-butynyl and 1-ethyl-1-methyl-2-propynyl;

haloalkynyl:alkynyl groups as mentioned above which are partially or fully substituted by fluo-rine, chlorine, bromine and/or iodine, for example 1,1-difluoroprop-2-yn-1-yl, 3-chloroprop-2-yn-1-yl, 3-bromoprop-2-yn-1-yl, 3-iodoprop-2-yn-1-yl, 4-fluorobut-2-yn-1-yl, 4-chlorobut-2-yn-1-yl, 1,1-difluorobut-2-yn-1-yl, 4-iodobut-3-yn-1-yl, 5-fluoropent-3-yn-1-yl, 5-iodopent-4-yn-1-yl, 6-fluorohex-4-yn-1-yl or 6-iodohex-5-yn-1-yl;

cycloalkyl and also the cycloalkyl moieties in composite groups: mono- or bicyclic saturated hydrocarbon groups having 3 to 10, in particular 3 to 6, carbon ring members, for example C₃-C₆-cycloalkyl, such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl or cyclooctyl. Examples of bicyclic radicals comprise bicyclo[2.2.1]heptyl, bicyclo[3.1.1]heptyl, bicyclo[2.2.2]octyl and bicyclo[3.2.1]octyl. In this connection, optionally substituted C₃-C₈-cycloalkyl means a cycloalkyl radical having from 3 to 8 carbon atoms, in which at least one hydrogen atom, for example 1, 2, 3, 4 or 5 hydrogen atoms, is/are replaced by substituents which are inert under the conditions of the reaction. Examples of inert substituents are CN, C₁-C₄-haloalkyl, C₁-C₆-alkoxy, C₃-C₆-cycloalkyl, and C₁-C₄-alkoxy-C₁-C₆-alkyl;

halocycloalkyl and the halocycloalkyl moieties in halocycloalkoxy, halocycloalkylcarbonyl and the like: monocyclic saturated hydrocarbon groups having 3 to 10 carbon ring members (as mentioned above) in which some or all of the hydrogen atoms may be replaced by halogen atoms as mentioned above, in particular fluorine, chlorine and bromine;

cycloalkoxy:cycloalkyl groups as mentioned above which are attached via an oxygen;

alkoxy and also the alkoxy moieties in composite groups, such as alkoxyalkyl: an alkyl group as defined above which is attached via an oxygen, preferably having 1 to 10, more preferably 2 to 6, carbon atoms. Examples are: methoxy, ethoxy, n-propoxy, 1-methylethoxy, butoxy, 1-methylpropoxy, 2-methylpropoxy or 1,1-dimethylethoxy, and also for example, pentoxy, 1-methylbutoxy, 2-methylbutoxy, 3-methylbutoxy, 1,1-dimethylpropoxy, 1,2-dimethylpropoxy, 2,2-dimethylpropoxy, 1-ethylpropoxy, hexoxy, 1-methylpentoxy, 2-methylpentoxy, 3-methylpentoxy, 4-methylpentoxy, 1,1-dimethylbutoxy, 1,2-dimethylbutoxy, 1,3-dimethylbutoxy, 2,2-dimethylbutoxy, 2,3-dimethylbutoxy, 3,3-dimethylbutoxy, 1-ethylbutoxy, 2-ethylbutoxy, 1,1,2-trimethylpropoxy, 1,2,2-trimethylpropoxy, 1-ethyl-1-methylpropoxy or 1-ethyl-2-methylpropoxy;

haloalkoxy: alkoxy as defined above, where some or all of the hydrogen atoms in these groups are replaced by halogen atoms as described above under haloalkyl, in particular by fluorine, chlorine or bromine. Examples are OCH₂F, OCHF₂, OCF₃, OCH₂Cl, OCHl₂, OCCl₃, chlorofluoromethoxy, dichlorofluoromethoxy, chlorodifluoromethoxy, 2-fluoroethoxy, 2-chloroethoxy, 2-bromoethoxy, 2-iodoethoxy, 2,2-difluoroethoxy, 2,2,2-trifluoroethoxy, 2-chloro-2-fluoroethoxy, 2-chloro-2,2-difluoroethoxy, 2,2-dichloro-2-fluoroethoxy, 2,2,2-trichloroethoxy, OC₂F₅, 2-fluoropropoxy, 3-fluoropropoxy, 2,2-difluoropropoxy, 2,3-difluoropropoxy, 2-chloropropoxy, 3-chloropropoxy, 2,3-dichloropropoxy, 2-bromopropoxy, 3-bromopropoxy, 3,3,3-trifluoropropoxy, 3,3,3-trichloropropoxy, OCH₂—C₂F₅, OCF₂—C₂F₅, 1-(CH₂F)-2-fluoroethoxy, 1-(CH₂Cl)—2-chloroethoxy, 1-(CH₂Br)-2-bromoethoxy, 4-fluorobutoxy, 4-chlorobutoxy, 4-bromobutoxy or nonafluorobutoxy; and also 5-fluoropentoxy, 5-chloropentoxy, 5-bromopentoxy, 5-iodopentoxy, undecafluoropentoxy, 6-fluorohexoxy, 6-chlorohexoxy, 6-bromohexoxy, 6-iodohexoxy or dodecafluorohexoxy;

hydroxyl: OH group which is attached via an O atom;

cyano: CN group which is attached via an C atom;

nitro: NO₂group which is attached via an N atom.

The preferred embodiments of the invention mentioned herein below have to be understood as being preferred either independently from each other or in combination with one another.

According to particular embodiments of the invention, preference is given to those compounds of formula (I) wherein the variables, either independently of one another or in combination with one another, have the following meanings:

Preferred compounds according to the invention are compounds of formula (I), wherein R¹is se-lected from the group consisting of hydrogen, (C₁-C₃)-alkyl, (C₃-C₄)-cycloalkyl, (C₁-C₃)-haloalkyl, (C₂-C₃)-alkenyl, (C₂-C₃)-alkynyl, (C₁-C₃)-alkoxy-(C₁-C₃)-alkyl, (C₁-C₃)-alkoxy.

More preferred compounds according to the invention are compounds of formula (I), wherein R¹is selected from the group consisting of hydrogen, (C₁-C₃)-alkyl, (C₃-C₄)-cycloalkyl, and (C₁-C₃)-alkoxy-(C₁-C₃)-alkyl.

Also preferred compounds according to the invention are compounds of formula (I), wherein R¹is selected from the group consisting of hydrogen, methyl, and methoxymethyl.

In particular, R¹is hydrogen.

Further preferred compounds according to the invention are compounds of formula (I), wherein R²is selected from the group consisting of hydrogen, halogen and (C₁-C₃)-alkyl.

Also preferred compounds according to the invention are compounds of formula (I), wherein R²is selected from the group consisting of hydrogen, fluorine, chlorine and methyl.

In particular, R²is hydrogen.

Further preferred compounds according to the invention are compounds of formula (I), wherein R³is selected from the group consisting of hydrogen, halogen, hydroxyl, cyano and (C₁-C₃)-alkyl, (C₁-C₃)-haloalkyl, (C₁-C₃)-haloalkoxy.

Also preferred compounds according to the invention are compounds of formula (I), wherein R³is selected from the group consisting of hydrogen, halogen, methyl, trifluoromethyl, trifluormethoxy.

In particular, R³is hydrogen or halogen, very particular chlorine or fluorine.

Further preferred compounds according to the invention are compounds of formula (I), wherein R⁴is selected from the group consisting of hydrogen and halogen.

Also preferred compounds according to the invention are compounds of formula (I), wherein R⁴is selected from the group consisting of hydrogen, fluorine, chlorine and bromine.

In particular, R⁴is hydrogen or hydrogen, fluorine or chlorine, very particular hydrogen.

Further preferred compounds according to the invention are compounds of formula (I), wherein R⁵is selected from the group consisting of hydrogen, halogen, hydroxyl, cyano and (C₁-C₃)-alkyl, (C₁-C₃)-haloalkyl, (C₁-C₃)-haloalkoxy.

Also preferred compounds according to the invention are compounds of formula (I), wherein R³is selected from the group consisting of hydrogen, halogen, methyl, trifluoromethyl, trifluormethoxy.

In particular, R⁵is hydrogen or halogen, very particular chlorine or fluorine.

Further preferred compounds according to the invention are compounds of formula (I), wherein R⁶is selected from the group consisting of hydrogen, halogen and (C₁-C₃)-alkyl.

Also preferred compounds according to the invention are compounds of formula (I), wherein R⁶is selected from the group consisting of hydrogen, fluorine, chlorine and methyl.

In particular, R⁶is hydrogen.

Further preferred compounds according to the invention are compounds of formula (I), wherein R⁷is selected from the group consisting of hydrogen, halogen, cyano, (C₁-C₆)-alkyl, (C₃-C₆)-cycloalkyl, (C₁-C₆)-haloalkyl, (C₁-C₃)-hydroxyalkyl.

Also preferred compounds according to the invention are compounds of formula (I), wherein R⁷is selected from the group consisting of hydrogen, halogen, cyano, trifluoromethyl.

In particular, R⁷is hydrogen or halogen, most particular fluorine.

Further preferred compounds according to the invention are compounds of formula (I), wherein R⁸is selected from the group consisting of hydrogen, (C₁-C₆)-alkyl and (C₃-C₆)-cycloalkyl.

Also preferred compounds according to the invention are compounds of formula (I), wherein R⁸is selected from the group consisting of hydrogen and (C₁-C₃)-alkyl.

In particular, R⁸is hydrogen.

In the compounds of formula (I), X is selected from the group consisting of a bond (X⁰) or a divalent unit from the group consisting of (X¹), (X²), (X³), (X⁴), (X⁵) and (X⁶), wherein the orientation of (X¹), (X²), (X³), (X⁴), (X⁵) and (X⁶) within the molecule is as depicted, the left arrow representating the bond to the adjacent nitrogen, the right arrow representating the bond to the adjacent group Y.

[Image Omitted]

In a preferred embodiment (compounds of formula (I.X⁰)), X is a bond (X⁰):

[Image Omitted]

In another preferred embodiment (compounds of formula (I.X¹)), X is (X¹), wherein the orientation of (X¹) within the molecule is as depicted, the left arrow representating the bond to the adjacent nitrogen, the right arrow representating the bond to the adjacent group Y:

[Image Omitted]

In another preferred embodiment (compounds of formula (I.X²)), X is (X²), wherein the orientation of (X²) within the molecule is as depicted, the left arrow representating the bond to the adjacent nitrogen, the right arrow representating the bond to the adjacent group Y:

[Image Omitted]

In another preferred embodiment (compounds of formula (I.X³)), X is (X³), wherein the orientation of (X³) within the molecule is as depicted, the left arrow representating the bond to the adjacent nitrogen, the right arrow representating the bond to the adjacent group Y:

[Image Omitted]

In another preferred embodiment (compounds of formula (I.X⁴)), X is (X⁴), wherein the orientation of (X⁴) within the molecule is as depicted, the left arrow representating the bond to the adjacent nitrogen, the right arrow representating the bond to the adjacent group Y:

[Image Omitted]

In another preferred embodiment (compounds of formula (I.X⁵)), X is (X⁵), wherein the orientation of (X⁵) within the molecule is as depicted, the left arrow representating the bond to the adjacent nitrogen, the right arrow representating the bond to the adjacent group Y:

[Image Omitted]

In another preferred embodiment (compounds of formula (I.X⁶)), X is (X⁶), wherein the orientation of (X⁶) within the molecule is as depicted, the left arrow representating the bond to the adjacent nitrogen, the right arrow representating the bond to the adjacent group Y:

[Image Omitted]

Further preferred compounds according to the invention are compounds of formula (I), wherein X is selected from the group consisting of a bond (X⁰) or a divalent unit from the group consisting of CH₂, CH₂CH₂, CHCH₃, CH₂CH₂CH₂, CH(CH₂CH₃), CH(CH₃)CH₂, C(CH₃)₂, C(CH₃)₂CH₂, C(iPr)CH₃, CH(CH₂iPr)CH₂, CH₂CH═CH, C(CH₃)₂C≡C, CH(CF₃)CH₂, CH(CH₃)CH₂O, CH₂CH₂O, CH(cPr)CH₂O, CH(CH₂OCH₃), CH(CH₂CH₂SCH₃), CH(COOH), CH(COOCH₃), CH(COOH)CH₂, CH(COOCH₃)CH₂, CH₂COH(CF₃), CH(CONHCH₃), CH(CONHCH₃)CH₂and CH₂CH₂CONHCH₂.

Further preferred compounds according to the invention are compounds of formula (I), wherein R¹⁰-R¹⁵each independently is selected from the group consisting of hydrogen, fluorine, chlorine, bromine, iodine, hydroxyl, cyano, CO₂R^e, CONR^bR^d, or (C₁-C₆)-alkyl, (C₃-C₅)-cycloalkyl, (C₂-C₆)-alkenyl, each substituted by m radicals from the group consisting of fluorine, or (C₁-C₆)-alkoxy, (C₃-C₆)-cycloalkoxy, (C₃-C₆)-alkenyloxy, (C₃-C₆)-alkynyloxy, (C₁-C₃)-alkylsulfinyl, (C₁-C₃)-alkylsulfonyl and (C₁-C₃)-alkylthio, each substituted by m radicals from the group consisting of fluorine.

Also preferred compounds according to the invention are compounds of formula (I), wherein R¹⁰-R¹⁵each independently is selected from the group consisting of hydrogen, fluorine, chlorine, CO₂R^e, CONR^bR^d, or (C₁-C₆)-alkyl, substituted by m radicals from the group consisting of fluorine, or (C₁-C₆)-alkoxy, substituted by m radicals from the group consisting of fluorine.

In particular, R¹⁰-R¹⁵each independently is selected from the group consisting of halogen, (C₁-C₆)-alkyl, (C₁-C₃)-alkoxy, and CO₂R^e.

Further preferred compounds according to the invention are compounds of formula (I), wherein Y is selected from the group consisting of hydrogen, cyano, hydroxyl, Z, or (C₁-C₁₂)-alkyl, (C₃-C₈)-cycloalkyl, (C₂-C₁₂)-alkenyl or (C₂-C₁₂)-alkynyl each substituted by m radicals from the group consisting of fluorine, chlorine, bromine, iodine, cyano, hydroxyl, Z, CO₂R^e, and CONR^bR^h.

Also preferred compounds according to the invention are compounds of formula (I), wherein Y is selected from the group consisting of hydrogen, cyano, hydroxyl, Z, or (C₁-C₁₂)-alkyl, and (C₃-C₈)-cycloalkyl, each substituted by m radicals from the group consisting of fluorine, CO₂R^e, and CONR^bR^h.

Also preferred compounds according to the invention are compounds of formula (I), wherein Y is selected from the group consisting of (C₁-C₁₂)-alkyl, (C₃-C₈)-cycloalkyl, (C₂-C₁₂)-alkenyl or (C₂-C₁₂)-alkynyl, each substituted by m radicals from the group consisting of fluorine, chlorine, bromine, iodine, cyano, hydroxyl, OR^d, Z, OZ, NHZ, S(O)_nR^a, SO₂NR^bR^d, SO₂NR^bCOR^e, CO₂R^e, CONR^bR^h, COR^b, CONReSO₂R^a, NR^bR^e, NR^bCOR^e, NR^bCONR^eR^e, NR^bCO₂R^e, NR^bSO₂R^eNR^bSO₂NR^bR^e, OCONR^bR^e, OCSNR^bR^e, POR^fR^fand C(R^b)═NOR^e.

Also preferred compounds according to the invention are compounds of formula (I), wherein Y is selected from the group consisting of (C₁-C₁₂)-alkyl, (C₃-C₈)-cycloalkyl, (C₂-C₁₂)-alkenyl or (C₂-C₁₂)-alkynyl, each substituted by m radicals from the group consisting of fluorine and CO₂R^e.

In particular, Y is selected from the group consisting of Z, or (C₁-C₁₂)-alkyl and (C₃-C₈)-cycloalkyl, each substituted by m radicals from the group consisting of fluorine, (C₁-C₂)-alkoxy, CO₂R^e, CONR^bR^h, and CONR^eSO₂R^a.

Very particular, Y is selected from the group consisting of Z, or (C₁-C₁₂)-alkyl and (C₃-C₈)-cycloalkyl, each substituted by m radicals from the group consisting of fluorine, (C₁-C₂)-alkoxy, CO₂R^e, and CONR^bR^h.

According to one preferred embodiment, Y is Z.

Preferred compounds according to the invention are compounds of formula (I), wherein Z is selected from the group consisting of four-, five- or six-membered saturated, partly unsaturated, fully unsaturated or aromatic rings, except phenyl, which are formed from r carbon atoms and n oxygen atoms, each substituted by m radicals from the group consisting of CO₂R^e, CONR^bR^h, S(O)_nR^a, SO₂NR^bR^d, SO₂NR^bCOR^e, COR^b, CONR^eSO₂R^a, NR^bR^e, NR^bCOR^e, NR^bCONR^eR^e, NR^bCO₂R^e, NR^bSO₂R^e, NR^bSO₂NR^bR^e, OCONR^bR^e, OCSNR^bR^e, POR^fR^fand C(R^b)═NOR^e, R^b, R^c, R^eand R^f, and where carbon atoms bear n oxo groups.

Also preferred compounds according to the invention are compounds of formula (I), wherein Z is selected from the group consisting of four-, five- or six-membered saturated, partly unsaturated, fully unsaturated or aromatic rings, except phenyl, which are formed from r carbon atoms and n oxygen atoms, each substituted by m radicals from the group consisting of CO₂R^e, CONR^bR^h, R^b, R^c, R^eand R^f, and where carbon atoms bear n oxo groups.

Further preferred compounds according to the invention are compounds of formula (I), wherein Z is selected from the group consisting of three-, four-, five- or six-membered saturated, partly unsaturated, fully unsaturated or aromatic rings, except phenyl, which are formed from r carbon atoms, o nitrogen atoms, n sulfur atoms and n oxygen atoms, and which are substituted by m radicals from the group consisting of CO₂R^e, CONR^bR^h, CONR^eSO₂R^a, R^b, R^c, R^eand R^f, and where the sulfur atoms and carbon atoms bear n oxo groups.

Representative examples for the three-, four-, five- or six-membered saturated, partly unsaturated, fully unsaturated or aromatic rings mentioned above, are the following structures:

[Image Omitted]

Also preferred compounds according to the invention are compounds of formula (I), wherein Z is selected from the group consisting of four- or five-membered saturated or partly unsaturated rings, which are formed from r carbon atoms and n oxygen atoms, each substituted by m radicals from the group consisting of CO₂R^e, CONR^bR^h, CONR^eSO₂R^a, R^b, R^c, R^eand R^f.

Also preferred compounds according to the invention are compounds of formula (I), wherein Z is selected from the group consisting of five-membered saturated or partly unsaturated rings, which are formed from 4 carbon atoms and 1 oxygen atom, each substituted by m radicals from the group consisting of CO₂R^e, CONR^bR^h, CONR^eSO₂R^a, R^b, R^c, R^eand R^f.

Representative examples for the five-membered saturated or partly unsaturated rings, which are formed from 4 carbon atoms and 1 oxygen atom, each substituted by m radicals from the group consisting of CO₂R^e, CONR^bR^h, CONR^eSO₂R^a, R^b, R^c, R^eand R^fmentioned above, are the following structures, the arrow indicating the bond to any of the mentioned substituents:

[Image Omitted]

Preferred examples for the five-membered saturated or partly unsaturated rings, which are formed from 4 carbon atoms and 1 oxygen atom, each substituted by m radicals from the group consisting of CO₂R^e, CONR^bR^h, CONR^eSO₂R^a, R^b, R^c, R^eand R^fmentioned above, are the following structures, the arrow indicating the bond to any of the mentioned substituents, preferably to CO₂R^e:

[Image Omitted]

Also preferred compounds according to the invention are compounds of formula (I), wherein Z is selected from the group consisting of five-membered saturated or partly unsaturated rings, which are formed from 5 carbon atoms, each substituted by m radicals from the group consisting of CO₂R^e, CONR^bR^h, CONR^eSO₂R^a, R^b, R^c, R^eand R^f.

Representative examples for the five-membered saturated or partly unsaturated rings, which are formed from 5 carbon atoms, each substituted by m radicals from the group consisting of CO₂R^e, CONR^bR^h, CONR^eSO₂R^a, R^b, R^c, R^eand R^fmentioned above, are the following structures, the arrow indicating the bond to any of the mentioned substituents:

[Image Omitted]

Preferred examples for the five-membered saturated or partly unsaturated rings, which are formed from 5 carbon atoms, each substituted by m radicals from the group consisting of CO₂R^e, CONR^bR^h, CONR^eSO₂R^a, R^b, R^c, R^eand R^fmentioned above, are the following structures, the arrow indicating the bond to any of the mentioned substituents, preferably to CO₂R^e:

[Image Omitted]

In particular, Z is selected from the group consisting of cyclobutyl, cyclopentyl, cyclopentenyl, and tetrahydrofuranyl, each substituted by m radicals from the group consisting of CO₂R^e, CONR^bR^h, CONR^eSO₂R^a, R^b, R^c, R^eand R^f.

Preferred examples Z.1 to Z.5, each substituted by m radicals from the group consisting of CO₂R^e, CONR^bR^h, CONR^eSO₂R^a, R^b, R^c, R^eand R^fmentioned above, are the following structures, arrow (1), representing the binding site to X, arrows (2) and (3) indicating the bond to any of the mentioned substituents, in particular to CO₂R^e, CONR^bR^h, R^b, R^c, R^eand R^f:

[Image Omitted]

Preferred compounds of the present invention are compounds of formula (I), wherein the substituents have the following meanings:

- R¹hydrogen, (C₁-C₃)-alkyl or (C₃-C₄)-cycloalkyl, more preferably hydrogen;
- R²hydrogen;
- R³halogen, cyano, (C₁-C₃)-haloalkyl or (C₁-C₃)-haloalkoxy, preferably fluorine or chlorine;
- R⁴hydrogen or halogen, preferably hydrogen;
- R⁵halogen, cyano, (C₁-C₃)-haloalkyl or (C₁-C₃)-haloalkoxy, preferably fluorine or chlorine;
- R⁶hydrogen;
- R⁷hydrogen, cyano, (C₁-C₃)-haloalkyl or halogen, preferably fluorine or chlorine;
- R⁸hydrogen;
- X a bond;
- Y Z;
- Z a three-, four-, five- or six-membered saturated, partly unsaturated, fully unsaturated or aromatic ring, except phenyl, which is formed from r carbon atoms, o nitrogen atoms, n sulfur atoms and n oxygen atoms, and which is substituted by m radicals from the group consisting of CO₂R^e, CONR^bR^h, CONR^eSO₂R^a, R^b, R^c, R^eand R^f, and where the sulfur atoms and carbon atoms bear n oxo groups;
- R^a(C₃-C₆)-cycloalkyl or phenyl, each of which is substituted by m radicals selected from the group consisting of fluorine, chlorine, bromine, iodine, cyano and hydroxy;
- R^bhydrogen, (C₁-C₆)-alkoxy or R^a;
- R^cfluorine, chlorine, bromine, iodine, cyano, hydroxyl, S(O)_nR^aor (C₁-C₆)-alkoxy, (C₃-C₆)-alkenyloxy or (C₃-C₆)-alkynyloxy, each of which is substituted by m radicals selected from the group consisting of fluorine, chlorine, bromine, cyano and (C₁-C₂)-alkoxy;
- R^ehydrogen or (C₁-C₆)-alkyl, (C₃-C₆)-cycloalkyl, (C₂-C₄)-alkenyl, phenyl-(C₁-C₃)-alkyl or (C₂-C₄)-alkynyl, each of which is substituted by m radicals selected from the group consisting of fluorine, chlorine, bromine, cyano, CO₂R^aand (C₁-C₂)-alkoxy;
- R^f(C₁-C₃)-alkyl or (C₁-C₃)-alkoxy;
- R^hhydrogen or (C₁-C₆)-alkyl, (C₃-C₆)-cycloalkyl, (C₂-C₄)-alkenyl, (C₁-C₆)-alkoxycarbonyl-(C₁-C₆)-alkyl, or (C₂-C₄)-alkynyl each of which is substituted by m radicals selected from the group consisting of fluorine, chlorine, bromine, cyano, CO₂R^aand (C₁-C₂)-alkoxy;
- r 1, 2, 3, 4, 5 or 6;
- n 0, 1 or 2;
- m 0, 1, 2, 3, 4 or 5;
- o 0, 1, 2, 3, 4.