New diphenyl ether derivatives having one to three substituents selected from a halogen atom and a trifluoromethyl group at any optional one to three positions of the 2'-, 3'-, 4'-, 5'- and 6'-positions in one phenyl moiety and nitro group at the 4-position and unsubstituted or substituted aminosulfonyl group at the 3-position in another phenyl moiety. They have a superior herbicidal effect and can be prepared starting from a known 3-benzylmercapto compound through three steps.
新的
二苯醚衍
生物在一个苯基团的2'-、3'-、4'-、5'-和6'-位置中的任意一个到三个位置具有卤素原子和三
氟甲基基团中的一个到三个取代基,并在另一个苯基团中的4-位置具有硝基基团和未取代或取代
氨基磺酰基团。它们具有优越的除草效果,并且可以从已知的3-苯基巯基化合物经过三个步骤制备。