| abstract |
The invention relates to novel compounds of formula I: (See formula I) wherein R1 through R5, A, X and Z have the meaning set forth in the description. Furthermore the invention relates to a process for the preparation of the novel compounds of formula I, to a novel pyrazol-5-ylboronic acid of formula V, which is used in said process (See formula V) wherein R3 through R5 have the meaning set forth in the description and to a herbicidal composition containing such compounds as active ingredients |