申请人:Mitsui Toatsu Chemicals Incorporated
公开号:US05131947A1
公开(公告)日:1992-07-21
4-Ethyl-3-(phenyl)-1-(3-trifluoromethylphenyl)-2-pyrrolidinones and corresponding compounds bearing a p-substituent on the 1-position phenyl group and/or a substituent on the 3-position phenyl group exhibit selective herbicidal activities against various weeds which cause problems in rice or upland fields, even at extremely low application rates. They can be prepared by reductive dehalogenation of a corresponding .alpha.-haloethyl substituted pyrrolidinone or reductive cyclization of a corresponding N-2-butenyl-N-(substituted phenyl)-haloacetyl-3-trifluoromethylaniline.
4-乙基-3-(苯基)-1-(3-三氟甲基苯基)-2-吡咯烷酮及相应化合物,在1-位置苯基团上带有对位取代基和/或在3-位置苯基团上带有取代基,对稻田或旱地上引起问题的各种杂草表现出选择性除草活性,甚至在极低的施用率下也有效。它们可以通过对应的α-卤乙基取代的吡咯烷酮进行还原去卤化或对应的N-2-丁烯基-N-(取代苯基)-卤乙酰基-3-三氟甲基苯胺进行还原环化来制备。