Patent ID: 8263603

Claim:
wherein R 1 is: H R 2 is: C 1 -C 6 alkyl optionally substituted with R 4 ; benzyl optionally substituted with 1-3 R 5 R 3 is —S(O) 2 R 6 ; R 4 is independently halogen, C 1 -C 6 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy, C 1 -C 4 haloalkoxy, C 1 -C 4 alkylthio, C 1 -C 4 haloalkylthio, amino, C 1 -C 3 alkylamino, C 2 -C 6 alkoxycarbonyl, C 2 -C 6 alkylcarbonyl, C 2 -C 6 alkylaminocarbonyl, hydroxyl, or C 3 -C 6 trialkylsilyl; R 5 is independently halogen, C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 1 -C 6 alkoxy, C 1 -C 6 haloalkoxy, C 1 -C 6 alkylthio, C 1 -C 6 haloalkylthio, amino, C 1 -C 6 alkylamino, C 2 -C 6 dialkylamino, C 2 -C 6 alkoxycarbonyl, or C 2 -C 6 alkylcarbonyl, nitro, hydroxyl, or cyano; R 6 is C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, amino, C 1 -C 6 alkylamino, C 2 -C 6 dialkylamino, a phenyl or benzyl wherein each of the phenyl or the benzyl may be optionally substituted with 1-3 R 5 , or a 5- or 6-membered saturated or unsaturated ring containing 1-3 heteroatoms wherein each ring may be optionally substituted with 1-3 R 5 .