| 摘要 |
<p>Dialkylamine-dinitrobenzene derivs prepn. herbicides The cpds. of formula (I): (where R1 and R2 are 1-4C alkyl, and X is H, F, Cl, Br, 1-4C alkyl opt. substd. by one or more F, Cl or Br atoms, OH or OH salified with NH3 or an organic base of the ethanolamine type), are prepared by reacting a halobenzene of formula (II) (where Hal is F, Cl or Br) with an aliphatic sec. amine, in aq. medium in the presence of a water sol. mineral base as acid acceptor, with stirring and cooling.</p> |
