| 摘要 |
Compounds of the formula <IMAGE> wherein R is halogen; C1-C2 alkyl; C1-C2 alkoxy; trifluoromethoxy; difluoromethoxy; nitro; cyano; C1-C2 haloalkyl; RaSOn- wherein n is 0 or 2 and Ra is C1-C2 alkyl; trifluoromethyl or difluoromethyl; R1 is hydrogen, C1-C4 alkyl, halogen, phenyl or substituted phenyl; R2 is hydrogen or C1-C4 alkyl; or R1 and R2 together are C2-C5 alkylene; R3 is hydrogen, C1-C4 alkyl, phenyl or substituted phenyl, with the proviso that R1 and R3 are not both phenyl or substituted phenyl; R4 is hydrogen or C1-C4 alkyl; R5 is hydrogen, halogen or C1-C4 alkyl; R6 is halogen, cyano, nitro, trifluoromethyl, -C(O)-ORf wherein Rf is C1-C4 alkyl, or -C(O)NR2b wherein Rb is hydrogen or C1-C2 alkyl; R7 and R8 independently are (1) hydrogen; (2) halogen; (3) C1-C4 alkyl; (4) C1-C4 alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C1-C4 haloalkyl; (9) RbSOn- wherein n is the integer 0, 1 or 2; and Rb is (a) C1-C4 alkyl; (b) C1-C4 alkyl substituted with halogen or cyano; (c) phenyl; or (d) benzyl; (10) -NRcRd wherein Rc and Rd independently are hydrogen or C1-C4 alkyl; (11) ReC(O)- wherein Re is C1-C4 alkyl or C1-C4 alkoxy; or (12) -SO2NRcRd wherein Rc and Rd are as defined; and (13) -N(Rc)C(O)Rd wherein Rc and Rd are as defined; and their salts.
|
