| abstract |
A compound of the formula:n nwherein R 1 is a hydrogen atom, a C 1 -C 5 alkyl group, a C 3 -C 4 alkenyl group, a C 3 -C 4 alkynyl group, a C 1 -C 4 haloalkyl group, a C 3 -C 4 haloalkenyl group, a C 3 -C 4 haloalkynyl group, a C 1 -C 2 alkoxy(C 1 -C 2 )alkyl group or a C 1 -C 2 -alkoxy(C1-C 2 )-alkoxy (C 1 -C 2 )alkyl group, R 2 and R 3 are, the same or different, each a hydrogen atom, a halogen atom, a C 1 -C 3 alkyl group or a phenyl group, X is a hydrogen atom, a chlorine atom or a fluorine atom and n is an integer of 0 or 1, which is useful as a herbicide. |