N-formyl-N-phosphonomethylglycine and esters thereof having the formula
wherein R is hydrogen or C1-5 alkyl; Z, is XR1 or NR3R4; Z2 is YR2 or NR3R4; X and Y are independently oxygen or sulfur; R, is hydrogen, C1-5 alkyl or phenyl;
R2 is hydrogen, C1-5 alkyl or phenyl;
R3 and R4 are independently hydrogen or C1-5 alkyl; provided that R, may not be phenyl when R2 is methyl and X and Y are oxygen and provided that R1 may not be methyl when Z2 is N-(C2H5)2, have been found to be effective herbicides, especially when applied to emerged plants.
N-甲酰基-N-膦酰甲基甘
氨酸及其酯,其式为
其中 R 是氢或 C1-5 烷基;Z 是 XR1 或 NR3R4;Z2 是 YR2 或 NR3R4;X 和 Y 独立地是氧或
硫;R 是氢、C1-5 烷基或苯基;
R2 是氢、C1-5 烷基或苯基;
R3和R4独立地为氢或C1-5烷基;但当R2为甲基、X和Y为氧时,R不能为苯基,当Z2为N-(
C2H5)2时,R1不能为甲基。