Compounds of formula wherein R 1 is alkyl, haloalkyl, cycloalkyl, halocycloalkyl, cycloalkylalkyl, halocycloalkylalkyl, alkoxyalkyl, haloalkoxyalkyl, hydroxyalkyl, substituted aryl or substituted heteroaryl, wherein substituted aryl and substituted heteroaryl are substituted with R 5, R 6 and R 7; R 2 is H, halogen, cyano, nitro, alkyl, haloalkyl, cycloalkyl, halocycloalkyl, cycloalkylalkyl, halocycloalkylalkyl, alkoxy, haloalkoxy, alkoxyalkyl, haloalkoxyalkyl, cycloalkoxy, halocycloalkoxy or hydroxyalkyl; R 3 is H, halogen, cyano, nitro, alkyl, haloalkyl, cycloalkyl, halocycloalkyl, cycloalkylalkyl, halocycloalkylalkyl, alkoxy, haloalkoxy, alkoxyalkyl, haloalkoxyalkyl, cycloalkoxy, halocycloalkoxy or hydroxyalkyl; R 4 is H, halogen, cyano, nitro, substituted amino, alkyl, cycloalkyl, halocycloalkyl, cycloalkylalkyl, halocycloalkylalkyl, alkynyl, alkoxy, haloalkoxy, alkylsulfanyl, cycloalkylsulfanyl, haloalkylsulfanyl, alkylsulfonyl, cycloalkylsulfonyl, haloalkylsulfonyl, alkoxyalkyl, haloalkoxyalkyl, cycloalkoxy, halocycloalkoxy or hydroxyalkyl, wherein substituted amino is substituted with R 8 and R 9; or R 3 and R 4 together form -CH 2 -CH 2 -C -N(CH 3)- or -CH=CH-S- R 5, R 6 and R 7 are independently selected from H, halogen, cyano, alkyl, haloalkyl, cycloalkyl, halocycloalkyl, cycloalkylalkyl, halocycloalkylalkyl, alkoxy, haloalkoxy, alkoxyalkyl, haloalkoxyalkyl, cycloalkoxy, halocycloalkoxy and hydroxyalkyl; R 8 is alkyl, cycloalkyl, formyl, alkylcarbonyl or alkoxycarbonyl; R 9 is H, alkyl or cycloalkyl; or pharmaceutically acceptable salts; with the proviso that at least one of R 2, R 3 and R 4 is different from H and that CAS 213389-81-2; CAS 222978-28-1; CAS 443920-37-4; CAS 371765-82-1; CAS 280143-24-0; CAS 192187-41-0; CAS 1227383-33-6; CAS 1227383-32-5; CAS 1227383-30-3; CAS 1227383-28-9; CAS 1118761-69-5; CAS 1050749-75-1;; CAS 491867-48-2 and CAS 942836-16-0 are excluded, wherein CAS 213389-81-2 is (4-chlorophenyl)(1-methyl-1H-imidazol-5-yl)-methanone. CAS 222978-28-1 is 2-fluoro-4-[(1-methyl-1H-imidazol-5-yl)carbonyl]-methanone. CAS 443920-37-4 is 4-[(1-methyl-1H-imidazol-5-yl)carbonyl]-benzonitrile. CAS 371765-82-1 is 2-bromo-4-[(1-methyl-1H-imidazol-5-yl)carbonyl]-benzonitrile. CAS 280143-24-0 is (4-chlorophenyl)[1-(1-methylethyl)-1H-imidazol-5-yl]-methanone. CAS 192187-41-0 is (1-butyl-1H-imidazol-5-yl)(4-chlorophenyl)-methanone. CAS 1227383-33-6 is [4-(1-methylethyl)phenyl](1-methyl-1H-imidazol-5-yl)-methanone. CAS 1227383-32-5 is (4-ethylphenyl)(1-methyl-1H-imidazol-5-yl)-methanone. CAS 1227383-30-3 is (1-methyl-1H-imidazol-5-yl)(4-methylphenyl)-methanone. CAS 1227383-28-9 is (4-chlorophenyl)(1-ethyl-1H-imidazol-5-yl)-methanone. CAS 1118761-69-5 is (4-chloro-3-methylphenyl)(1-methyl-1H-imidazol-5-yl)methanone. CAS 1050749-75-1 is (1-methyl-1H-imidazol-5-yl)[3-(trifluoromethyl)phenyl]-methanone. CAS 1283718-66-0 is (4-chloro-2-fluoro-5-methoxyphenyl)(1-methyl-1H-imidazol-5-yl)-methanone. CAS 491867-48-2 is (2-fluorophenyl)(1-methyl-1H-imidazol-5-yl)-methanone. CAS 942836-16-0 is (3-bromophenyl)(1-methyl-1H-imidazol-5-yl)-methanone. R 1 is alkyl, haloalkyl, cycloalkyl, halocycloalkyl, cycloalkylalkyl, halocycloalkylalkyl, alkoxyalkyl, haloalkoxyalkyl, hydroxyalkyl, substituted aryl or substituted heteroaryl, wherein substituted aryl and substituted heteroaryl are substituted with R 5, R 6 and R 7; R 2 is H, halogen, cyano, nitro, alkyl, haloalkyl, cycloalkyl, halocycloalkyl, cycloalkylalkyl, halocycloalkylalkyl, alkoxy, haloalkoxy, alkoxyalkyl, haloalkoxyalkyl, cycloalkoxy, halocycloalkoxy or hydroxyalkyl; R 3 is H, halogen, cyano, nitro, alkyl, haloalkyl, cycloalkyl, halocycloalkyl, cycloalkylalkyl, halocycloalkylalkyl, alkoxy, haloalkoxy, alkoxyalkyl, haloalkoxyalkyl, cycloalkoxy, halocycloalkoxy or hydroxyalkyl; R 4 is H, halogen, cyano, nitro, substituted amino, alkyl, cycloalkyl, halocycloalkyl, cycloalkylalkyl, halocycloalkylalkyl, alkynyl, alkoxy, haloalkoxy, alkylsulfanyl, cycloalkylsulfanyl, haloalkylsulfanyl, alkylsulfonyl, cycloalkylsulfonyl, haloalkylsulfonyl, alkoxyalkyl, haloalkoxyalkyl, cycloalkoxy, halocycloalkoxy or hydroxyalkyl, wherein substituted amino is substituted with R 8 and R 9; or R 3 and R 4 together form -CH 2 -CH 2 -C -N(CH 3)- or -CH=CH-S- R 5, R 6 and R 7 are independently selected from H, halogen, cyano, alkyl, haloalkyl, cycloalkyl, halocycloalkyl, cycloalkylalkyl, halocycloalkylalkyl, alkoxy, haloalkoxy, alkoxyalkyl, haloalkoxyalkyl, cycloalkoxy, halocycloalkoxy and hydroxyalkyl; R 8 is alkyl, cycloalkyl, formyl, alkylcarbonyl or alkoxycarbonyl; R 9 is H, alkyl or cycloalkyl; or pharmaceutically acceptable salts; with the proviso that at least one of R 2, R 3 and R 4 is different from H and that CAS 213389-81-2; CAS 222978-28-1; CAS 443920-37-4; CAS 371765-82-1; CAS 280143-24-0; CAS 192187-41-0; CAS 1227383-33-6; CAS 1227383-32-5; CAS 1227383-30-3; CAS 1227383-28-9; CAS 1118761-69-5; CAS 1050749-75-1;; CAS 491867-48-2 and CAS 942836-16-0 are excluded, wherein