PRODUCTION OF PHENYL ETHER DERIVATIVE,申请号JP19910224846-传众专利搜索

PRODUCTION OF PHENYL ETHER DERIVATIVE

申请公布号：JPH0543535(A)

申请号：JP19910224846

申请日期：1991.08.09

申请公布日期：1993.02.23

申请人：

MITSUBISHI PETROCHEM CO LTD

发明人：TANIYAMA EIJI;IMADA SATOSHI;OKANO KAZUYA;KIN EMIKO

分类号：B01J31/02;C07B61/00;C07C259/10

主分类号：B01J31/02

摘要：PURPOSE:To provide in an industrially easy way in high yield the title compound giving high herbicidal activity at a low level of application, broad in herbicidal spectrum, also favorably selective for main crops. CONSTITUTION:Reaction is carried out between (A) a 2-nitro-5- fluorobenzohydroxime acid derivative of formula I (R is H, lower alkyl or agriculturally soluble salt ion; R<1> is lower alkyl; R<2> is H or lower alkyl) and (B) a substituted phenol of formula II (X and Y are each halogen; Z is H or alkali metal) in the presence of a phase-transfer catalyst such as tetrabutylammonium bromide to obtain the objective compound of formula III useful as a herbicide in an industrially advantageous manner without the need for any highly polar, high-boiling solvent such as N,N-dimethylformamide, in high yield in a shorter time than the case with conventional methods. The amount of said catalyst to be used is normally 0.001-10 (pref. 0.005-1) mol per mol of the compound of the formula II.