| 摘要 |
Compounds having the formula <CHEM> wherein R is halogen; C1-C2 alkyl; C1-C2 alkoxy; nitro; cyano; C1-C2 haloalkyl; or R<a>SOn- wherein n is 0 or 2 and R<a> is C1-C2 alkyl; R<1> is hydrogen or C1-C4 alkyl; R<2> is hydrogen or C1-C4 alkyl; or R<1> and R<2> together are alkylene having 2-5 carbon atoms; R<3> is hydrogen or C1-C4 alkyl; R<4> is hydrogen or C1-C4 alkyl; or R<3> and R<4> together are carbonyl; and R<5> and R<6> 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) R<b>SOm- wherein m is the integer 0, 1 or 2; and R<b> is (a) C1-C4 alkyl; (b) C1-C4 alkyl substituted with halogen or cyano; (c) phenyl; or (d) benzyl; (10) -NR<c>R<d> wherein R<c> and R<d> independently are hydrogen or C1-C4 alkyl; (11) R<e>C(O)- wherein R<e> is C1-C4 alkyl or C1-C4 alkyl or C1-C4 alkoxy; or (12) -SO2NR<c>R<d> wherein R<c> and R<d> are as defined; and (13) -N(R<c>)C(O)R<d> wherein R<c> and R<d> are as defined; R<7> is C1-C4 alkyl or phenyl; and t is the integer 0 or 1 and their salts are useful as herbicides. |
