大棚养殖黄鳝
专利名称：PREPARATION OF DIPHENYL ETHER COMPOUND
发明人：YAGI NOBORU,UMEMOTO痛风要吃什么
MITSUMASA,MICHIYAMA HIDEO
申请号：JP10242480
申请日：19800728
公开号：JPS5728039A睡衣
纪念碑简笔画公开日：西芹炒百合
马约翰
19820215
专利内容由知识产权出版社提供
2019年五行摘要：PURPOSE:To prepare the titled compound having excellent herbicidal activity, high lectivity, and sufficiently high residual activity, and uful as a herbicide for paddy rice field and plowed field, by reacting a hydrazinodiphenyl ether compound with a nitrating reagent. CONSTITUTION:A hydrazinodiphenyl ether compound of formula I (A and B are halogen or halogen-substituted lower alkyl; C and D are H, halogen, etc., and the substitution position of D is 2'-, 5'-, or 6'-; R<1> is H, alkyl, etc.; R<2> and R<3> are H, alkyl, phenyl, etc.; provided that at least one of R<1>, R<2> and R<3> is not H) is made to react with a nitrating reagent (e.g. nitric acid) in the prence or abnce of an inert organic solvent (e.g. nitromethane) under stirring, at -10-+50 deg.C to obtain the titled compound of formula II. The amount of the nitric acid or nitrate is pref. 1.0-1.5mol per
东郭先生和狼1mol of the compound of formula I. EFFECT:The side reactions such as oxidative decomposition, condensation, etc. can be suppresd.
申请人：MITSUI TOATSU CHEMICALS
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